The goal is to engage students with primary historical material and hopefully teachers will incorporate them into their course curriculum.  The use of primary sources encourage students to ask questions, view events from a historical point of view, and think critically.  Below are sites where primary source material and information can be found.  Two links are from the Library of Congress Learning Page and relate to a lesson which they developed.

19th Century American Literary, Historical, and Cultural Studies
AMDOCS: Documents for the Study of American History
The American History Online
Archiving Early America
A unique array of original newspapers, maps and writing fromt the 18th century in digital format.
Civil War Photographs
Classroom Connect's American Memory
Doing Research
Dr. Seuss Went to War
EyeWitness: History through the eyes of those who lived it
First hand accounts, illustrated with vintage photos and original radio broadcasts.
Heritage Image Partnership
The Learning Page...especially for teachers
     A teacher's guide to the American Memory collections of the Library of Congress.
Lesson Framework
Lesson Overview
National  Archives and Records Administration
PicSearch
Primary Source Collections
Repositories of Primary Sources
UC Berkeley Library
Using Historical Photographs to Enliven Education
Using Primary Sources on the Web