Library of Congress Basic Educator Analysis Tools and Resources
http://www.loc.gov/teachers/usingprimarysources/guides.html
Teachers Guides with answers to the analysis tool sheet:
http://www.loc.gov/teachers/usingprimarysources/resources/Analyzing_Primary_Sources.pdf
Lesson plans: http://www.loc.gov/teachers/classroommaterials/lessons/
Prints and photographs: http://www.loc.gov/teachers/classroommaterials/lessons/#topic233
Main education page for resources, primary source sets, analysis tools
Library of Congress blogs: https://blogs.loc.gov/
Chronicling America
https://chroniclingamerica.loc.gov/
"Chronicling America (ISSN 2475-2703) is a Website providing access to information about historic newspapers and select digitized newspaper pages, and is produced by the National Digital Newspaper Program (NDNP). NDNP, a partnership between the National Endowment for the Humanities (NEH) and the Library of Congress (LC), is a long-term effort to develop an Internet-based, searchable database of U.S. newspapers with descriptive information and select digitization of historic pages. Supported by NEH, this rich digital resource will be developed and permanently maintained at the Library of Congress. An NEH award program will fund the contribution of content from, eventually, all U.S. states and territories."