Williams Libraries owns almost every volume of the print Serial Set through the 112th Congress. The volumes are stored in our Library Shelving Facility (LSF). Any user, even non-Williams, may request them from the LSF.
Congressional Publications provides the full-text of all Serial Set content through 1979 (96th Congress). If you have the Serial Set volume number from a bibliographic citation (ex: H.doc.352), you can search by number.
For help finding the correct volume numbers for House and Senate Documents and Reports from 1979 - current, see this schedule of serials set volumes.