Government Printing Office Improvement Act of 1990

Government Printing Office Improvement Act of 1990 - Prohibits the obligation or expenditure of appropriated funds by any executive branch entity to: (1) establish any in-plant printing facility unless such facility has been specifically authorized by law; or (2) procure any printing or other information products and services related to the production of Government publications (including forms) from commercial sources unless such procurement is by or through the Government Printing Office (GPO).

Requires printing and other information products and services authorized by law, which the Public Printer is not able or equipped to do at GPO, to be produced elsewhere under contracts made by the Public Printer with the approval of the Joint Committee on Printing.

Requires the Superintendent of Documents to include data on information services in the comprehensive index of public documents. Authorizes the Superintendent to allow depository libraries access to information services subject to agreement between the Superintendent and the Government component issuing the service on the terms and conditions of access, including cost sharing arrangements.