With the collaboration of the publishers and through a financial grant provided by the Council on Library Resources, the Library of Congress experimented with what was known as Cataloguing-in-Source. Under this programme a central organization catalogues books before their publication. The catalogue entries are then printed, into the books themselves. The publishers will have to cooperate with the central organisation for this purpose. The Library of Congress catalogued, 1,203 publications of 157 publishers using page proofs from June, 1958 to February, 1959.
The Library of Congress could experiment with Cataloguing-in-Source only during 1958-59. At the end of that period they felt that in view of the finances involved besides technical considerations, and the actual use of the service, a permanent full-scale service is not justified.