Scope and Contents Topics and types of documents include re: H. R. 3881 the Urban Mass Transportation Act; news clippings; letter signed by mayors of various cities regarding mass transit legislation; various correspondence dealing with mass transit legislation; copy of H. R. 11080 to establish an urban mass transportation trust fund; mass transportation proposal; copy of H. Res. 324 regarding mass transportation-a national priority; letter to President Richard M. Nixon by several members of Congress concerning...