The text of reports can be found in a number of resources including those recommended and listed below. Reports are also sometimes found on committee web sites and also are contained within
Main Collection KF48 .W45
ProQuest Congressional provides:
House and Senate Reports 1817 -
Go to Advanced Search, select House and Senate Reports 1817 - Present. Recommended: When searching, use the "All fields including full text" option, from the pull down search menu.