Skip to main content
Login to LibApps


Environmental History

Resources relevant to the historical study of our environment with an emphasis on North America

How to Reach Me

 

Ed is available to assist students with their research needs through the Libraries' dedicated subject liaison program.  Ed is on the Tempe campus.  His office address is Hayden Library, C1T. Telephone: (480) 965-4579 or email: edding@asu.edu-- please feel free to make an appointment  I look forward to seeing you!

What are Primary Sources

Primary sources are the historical documents used by historians as evidence. Examples of primary sources include diaries, personal journals, government records, court records, property records, newspaper articles, military reports, military rosters, and many other things.

In contrast, a secondary source is the typical history book which may discuss a person, event or other historical topic. A good secondary source uses primary sources as evidence.

The key to determining whether an item may be considered to be a primary source is to ask how soon after the event was the information recorded. This can be a problem with an autobiography, memoir, reminiscence, etc. if the author is working several years with only the memory of what happened. Your history professor will disallow most or all of these as primary sources.   However, the rule of thumb should always be:  if you're not sure whether something is an acceptable primary source, ask your professor.

Ask a Librarian

Hours and Locations