Recently acquired: the retrospective LexisNexis Congressional Research Digital Collection. This collection, accessible through LexisNexis Congressional, includes abstracting, indexing, bibliographic information, and searchable PDFs for Congressional Research Service reports from 1916-present and committee prints from 1830-present.
LexisNexis Congressional is available at:
http://www.lib.umn.edu/cgi-bin/cong.cgi