Below you will find links to several places where you can find primary sources.
Remember that there may be some secondary sources mixed in! You need to remember the difference between primary and secondary sources. Primary sources are "directly related to an issue or event." It is "first hand evidence or first hand accounts or materials in use during the event or time in question." Secondary sources are "one step removed from the event."
View an amazing collection of professional photography (primary sources) on the web in a collection of over 10 million photos from the legendary archives of LIFE photography. More than 3,000 photos are added daily and you are able to view photos from the early 20th century.