Search the MERLIN library catalog to find materials the library owns, including Government Documents.
Search the Merlin catalog for the government documents that the library has access to, if it is freely available online the catalog will tell you!
Freely availble online! Follow the link in the catalog to the external webpage for the information you need!
The majority of documents published by the federal government are in the public domain. There are some exceptions. The federal government out sources some of its research and publications to private publishers. Those works may be copyrighted. Check the specific document.
Also many state and county publications may be copyrighted; they are not necessarily in the public domain.