Take a look at the following letter written by Abraham Lincoln. What indicates that it is a primary source?
A letter written by Abraham Lincoln in 1854
The letter is dated.
It is a handwritten document.
The letter looks old.
Abraham Lincoln was the president in 1854.
A letter written by Abraham Lincoln in 1854
The letter is dated.
It is a handwritten document.
The letter looks old.
Abraham Lincoln was the president in 1854.