Library of Congress possible photos to request
http://www.loc.gov/pictures/item/99402536/ — Reproduction Number: LC-USZ62-122635
University of California at Berkeley student, screaming “freedom now” being dragged off to jail by police, after sit-in protesting regulations concerning campus politics. Dec. 3, 1964 — New York World-Telegram and the Sun Newspaper Photograph Collection
http://www.loc.gov/pictures/item/2005681187/ — Reproduction Number: LC-USZ62-135787
Group of students, some holding a Confederate flag in the air, protest the arrival of James Meredith at the University of Mississippi
http://www.loc.gov/pictures/item/95517764/ — LC-USZ62-35363 Howard University students picket the National Crime Conference in Washington, D.C., Dec., 1934 when the leaders of the conference refused to discuss lynching as a national crime
Search:
First Amendment, Free Speech, Freedom of Religion, and college, higher education, universities and people from historical section
Wikimedia Commons — Photos of prominent figures
Library of Congress — Great source
USGS — US Geological Survey
USDA — US Dept. Agriculture
US F&W — US Fish & Wildlife
US Government — Government searches
NOAA — National Oceanographic and Atmospheric Agency
NASA — National Aeronautics and Space Agency
CDC — Centers for Disease Control
Special sources:
World Trade Center — NY Police photos of 911
Permission probably needed:
Compfight —
Flickr —