§ 501.4 Use of reading rooms for serials; service of materials. Applications for materials in the custody of the Serials Division (current and unbound periodicals, bound and unbound newspapers, Government documents, pamphlets, ephemera, etc., not allocated to other divisions), are submitted to the staff on forms provided for that purpose in the Division's special reading rooms. Within the resources of the staff, readers receive reference aid in the Division's collections and in Government publications in the general classified collections. Access to the Division's stack areas is permitted only on the approval of the Chief or of other authorized officials. Inquiries concerning the collections and services of the Division, and requests for reference assistance may be made to the Office of the Chief of the Division.

§ 501.5 Loans of library materials. The Library of Congress is not a public circulating library and no material in its collections may be taken from the Library buildings except upon approval by the Chief of the Loan Division or the Director of the Reference Department. Members of Congress and their staffs and officials of executive departments and agencies have the privilege of withdrawing books by virtue of their office. Subject to regulations and conditions established by the Librarian of Congress, special permits to withdraw materials may be issued to individuals and institutions in and near the District of Columbia to meet particular needs. Applications for such privilege are acted upon by the Chief of the Loan Division, who is responsible for the interpretation and enforcement of the regulations governing loans. Except for Members of Congress and their staffs and officials of executive departments and agencies, persons having the borrowing privilege must present materials to be borrowed to the Loan Division for recording and for issuance of a door pass. Borrowers must present the materials for inspection to the guards on duty at the exits to the Library buildings and must surrender their door passes upon leaving the buildings. Materials are issued on interlibrary loan to other libraries outside of the District of Columbia under regulations established by the Librarian of Congress. Applications for such loans and requests for information about interlibrary loans and the loan service generally should be directed to the Chief of the Loan Division.

§ 501.6 Loans of library materials for the blind-(a) Definition of blind. In connection with the Library's program of service under the act of March 3, 1931, as amended, entitled "An Act to Provide Books for the Blind," the blind readers entitled to service under this act shall be defined as "Residents of the United States, including the several States, Territories, Insular Possessions, and the District of Columbia, whose visual acuity is 20/200 or less in the better eye with correcting glasses, or whose widest diameter of visual field subtends an angular distance no greater than twenty degrees." The degree of such blindness shall be certified by a duly licensed physician, optometrist, or ophthalmologist. The reading materials for the blind provided under the authority of the act cited above, including sound reproducers, may be loaned not only to readers who qualify under the above definition but also to hospitals, institutions, and schools for the use of such readers.

(b) Loans to residents. The Division for the Blind lends books in embossed characters and talking-book records to the blind under regulations and conditions of use established by the Librarian. The area to which this service is extended is limited generally to the District of Columbia, Maryland, Virginia, North Carolina, and South Carolina. Inquiries by mail concerning this service should be addressed to: Chief, Division for the Blind, Library of Congress, Washington 25, D. C.

(c) Loans to residents temporarily domiciled abroad. In accordance with the definition given in paragraph (a) of this section, and the intent and purpose of the Act to Provide Books for the Blind Residents of the United States, its Territories, Insular Possessions, and the District of Columbia (2 U. S. C. 135a), the distributing libraries which have been designated by the Librarian of Congress to serve as local or regional centers for the circulation of such books (2 U. S. C. 135b) shall lend such books to blind residents of the United States, its Territories, etc., who may be temporarily domiciled outside the jurisdictions enumerated by the act. Inquiries for information relative to the prescribed procedures and regulations governing such loans should be to: Chief, Division for the Blind, Library of Congress, Washington 25, D. C.

(1) When requests for loans of the character authorized in this section are

made of the Library of Congress, they
shall be addressed to the Loan Division,
Library of Congress, Washington 25,
D. C., U. S. A.

(2) Talking book machine lending
agencies are authorized to permit blind
readers, residents of the United States,
temporarily domiciled abroad, to take
the talking book machines loaned to
them when they go abroad under the
same conditions as book loans.
[20 F. R. 10055, Dec. 29, 1955]

§ 501.7 Service of scientific materials.
Readers requesting reference and bib-
liographic assistance in science and
technology, including aeronautics, may
consult the staff on duty in the general
reading rooms. Inquiries are referred
when necessary to specialists in the
Science Division. A current science ref-
erence collection is available to readers
in the Science Room.
[20 F. R. 10055, Dec. 29, 1955]

§ 501.8 Reference and bibliographic
assistance. Reference and bibliographic
services provided in response to requests
from readers and requests received by
telephone and by mail are governed by
policies and regulations established by
the Librarian of Congress. Readers re-
quiring reference and bibliographic as-
sistance in the general collections and
aid in the use of the card catalogs may
request help from the staff on duty in
the general reading rooms. Requests
for such assistance in special collections
are referred to the appropriate special-
ized divisions.

[20 F. R. 10055, Dec. 29, 1955]

§ 501.9 Service of Hispanic materials.
Readers requesting reference and bibli-
ographic assistance on Hispanic materi-
als may consult the staff on duty in the
general reading rooms. Inquiries are re-
ferred when necessary to specialists in
the Hispanic Foundation.
[20 F. R. 10055, Dec. 29, 1955]

§ 501.10 Investigation and use of
manuscript materials. Services to read-
ers in the Manuscripts Reading Room are
provided in accordance with prescribed
conditions of registration for investiga-
tion and of use of materials and informa-
tion therefrom in the custody of the
Manuscripts Division. The use of such
materials is restricted to the Manuscripts
Reading Room. Investigators requiring
materials from other collections in the
Library for use with materials in the cus-

tody of the Manuscripts Division may
requisition and use such materials in the
Manuscripts Reading Room insofar and
on such conditions as they are available
for use therein.

§ 501.11 Service of maps. Services to
readers in the Map Reading Room are
provided in accordance with prescribed
conditions of use of the materials in the
custody of the Map Division. Special
facilities are provided for use of maps.
Investigators requiring materials in
other collections of the Library for use
with materials in the custody of the
Map Division may requisition and use
such materials in the Map Reading
Room insofar and on such conditions as
they are available for use therein.
[20 F. R. 10055, Dec. 29, 1955]

§ 501.12 Use and service of music ma-
terials. Services to readers in the Music
Reading Room are provided in accord-
ance with prescribed conditions of use
of the materials in the custody of the
Music Division. Investigators requiring
materials from other collections of the
Library for use with materials in the cus-
tody of the Music Division may requisi-
tion and use such materials in the Music
Reading Room insofar and on such con-
ditions as they are available for use
therein. Applications for access to the
bookstacks are acted upon by the Chief
of the Music Division. Recordings of
folk music may be purchased from the
Recording Laboratory of the Music Di-
vision. Catalogs are available upon ap-
plication thereto.

§ 501.13 Use and service of Orientalia.
Services to readers in the Orientalia
Reading Room are provided in accord-
ance with prescribed conditions of use
of the materials in the custody of the
Orientalia Division (materials, written
or printed, in Chinese, Japanese, Semitic,
Arabic, Persian, Turkish, etc.). Readers
requiring reference and bibliographic
assistance in all fields of Oriental culture
are served in the Orientalia Reading
Room, to which are delivered materials
from the general collections insofar and
on such conditions as they are available
for use therein.

§ 501.14 Use of prints and photo-
graphs collections. Services to readers
requiring reference and bibliographic as-
sistance in the collection of prints and
photographs are provided in the Prints
and Photographs Reading Room in ac-
cordance with prescribed conditions for

use of the materials as determined by the
Chief of the Division. Investigators re-
quiring materials from other collections
of the Library for use with materials in
the custody of the Prints and Photo-
graphs Division may requisition and use
such materials in the divisional reading
room insofar and on such conditions as
they are available for use therein. Prints
from photographic negatives, and photo-
copies of prints and photographs in the
Division's collection, when not subject to
copyright or other restrictions, are pro-
curable at specified rates from the Photo-
duplication Service of the Library.

501.15 Service of rare books. Serv-
ices to readers in the Rare Books Read-
ing Room are provided in accordance
with prescribed conditions of registration
for investigation and of use of the ma-
terials in the custody of the Rare Books
Division. Investigators requiring ma-
terials from other collections of the Li-
brary for use with materials in the cus-
tody of the Rare Books Division may
requisition and use such materials in the
Rare Book Room insofar and on such
conditions as they are available for use
therein.

§ 501.16 Service of microfilms and
micro-print materials. Services to read-
ers in the Microfilm Reading Room are
provided in accordance with prescribed
conditions of use of the microfilm and
micro-print materials in the custody of
the Room and of operations of reading
machines. Investigators requiring ma-
terials from other collections of the Li-
brary for use with materials in the cus-
tody of the Microfilm Reading Room may
requisition and use such materials in the
Microfilm Reading Room insofar and on
such conditions as they are available for
use therein.

§ 501.17 Use of law reading rooms;
circulation of legal materials; reference
inquiries. (a) The reading rooms of the
Law Library are free and accessible to
the public without formality. Those
volumes which are not on the open
shelves may be obtained for reading room
use by filling out and presenting to a ref-
erence assistant a slip provided for the
purpose, indicating thereon the author
and title of the work desired and the
name and address of the reader.

(b) The collections of the Law Library
are available in part, for use outside the
Library for a limited period, to author-
ized borrowers in Washington, D. C., and

through interlibrary loan to the general
public residing in other parts of the
country, in conformity with Loan Divi-
sion procedures. Books which are lent
for use outside of the Law Library read-
ing rooms must be charged in the Law
Library as well as in the Loan Division,
where a formal charge is made. (See
§ 501.5)

(c) Reference inquiries, and requests
for service, which cannot be satisfied by
other libraries or scholarly institutions
nearer the inquirer, may be submitted
to the Library of Congress which will
respond to them insofar and on such
conditions as personnel can be made
available.

8501.18 Offers of materials for pur-
chase; evaluations. (a) The Library so-
licits offers of library materials (includ-
ing books, periodicals, pamphlets, manu-
scripts, maps, views, music, recordings,
motion pictures, photographs, posters,
fine prints, etc.). Printed lists or cata-
logs of library materials offered should
be submitted in three to five copies, de-
pending on the number of subjects or
forms of material included. Typewritten
or manuscript lists should be submitted
in duplicate. Offers should specify au-
thor, title, place of publication, publisher,
date of publication, whether or not copy-
righted, edition note, series note, binding,
number of pages or volumes, and price of
each item offered. All offers of material
and all other correspondence concerning
the acquisition by purchase of materials
for the Library's collections (including
invoices, statements, and questions con-
cerning payment for material purchased
by the Library) should be addressed to:
Order Division, Library of Congress,
Washington 25, D. C.

(b) Materials should not be sent "on
approval" unless specifically requested
by the Order Division.

(c) Reference inquiries as to the prob-
able present cost and possible source for
purchase or sale of a specific book or
other piece of library material should
also be directed to the above address. An
exact transcription of the title page and
any additional information such as edi-
tion, series note or copyright date should
be submitted with the inquiry.

supplemented by emendations in the bulletin, Cataloging Service, published by the Library of Congress, Processing Department. Cards may be ordered by author and title or by serial number. Card order slips required for this purpose are furnished to subscribers upon request.

Printed catalog cards in book form are available by purchase of the publication, Library of Congress Catalog (A Cumulative List of Works Represented by Library of Congress Printed Cards)-Books: Authors and Books: Subjects.

[20 F. R. 10055, Dec. 29, 1955]

§ 501.20 Exhibit of library materials. Certain materials in the Library's collections are available for loan to other institutions for purposes of display at free public exhibits, subject to special conditions fixed by the Library. This service is subject to limitations in terms of the

character of the materials and the availability of staff to prepare materials for shipment.

[20 F. R. 10055, Dec. 29, 1955]

§ 501.21 Service of materials in Slavic and East European languages. Readers requesting reference and bibliographic assistance on materials in Slavic and other East European languages may consult the staff on duty in the Slavic Room. Inquiries are referred when necessary to specialists in the Slavic and East European Division.

[20 F. R. 10055, Dec. 29, 1955]

§ 501.22 Service of local history and genealogy materials. Readers requesting reference and bibliographic assistance on materials in local history and genealogy may consult the staff in the Local History and Genealogy Room. [20 F. R. 10055, Dec. 29, 1955]