Is this a primary source (written at the time of events) orsecondary source (written after the event, usually by a historian)?
Who is the author/creator of the source?
When was the source written/created? How close is it to the dateof the actions/events it describes?
What sources of information has the author/creator used toconstruct this source?
What sort of information is in the source?
Was there a purpose in writing/creating it (eg propaganda)? Whowas the audience?
What is the tone of the source? Is it biased, reasonable, emotional,propagandist etc?
Is this source supported by other sources?
What can the source be used for? It might be good evidence for oneissue, but unreliable for another.