You can search by Congress Session/Number in the U.S. Statutes at Large database by using HeinOnline’s one-box search located at the top of the homepage.
For example, let’s search for H.R. 956 from the 105th Congress. Enter “H.R. 956” AND congress:105 into the one-box search and select the Just Search for option.
Results include the U.S. Statutes citation that includes the congress number and session searched.