Which of the following materials is NOT a common source of information?

It is one of the common materials that can be a source of information which is about the different subjects in schools.

Which is an example of a general statement?

What listening/reading materials are common sources of information?

Which of the following is the primary source of information?

Which of the following is a second source of information?

It is one of the common materials that talks about world news, local news, police report, weather report, science and environment news, health news, entertainment news, business news, technology news, and many others.

A girl found a box of letters written by a soldier to his wife and children during the c

Civil War.  Are those letters  primary documents?  

Yesterday,  my brother Sam wrote a story about the Louisiana Purchase which occurred in 1803.  Is this story considered a primary document?

I want to visit my grandmother.  She gave me a chest.  The chest was filled with her childhood items.  She told me that she loved her things.  When I opened it.  I found her toys, some photographs and her birth certificate.  Are those things primary documents?