1.    Choose one highly promising primary source.

2.    Extract four or five interesting quotes from it, whether a sentence or a few sentences long.

3.    Briefly indicate what is important about each quote.

4.    Write a paragraph or two of prose about this one primary source.

4a.    You have to work with an historical -- not argument, but hypothesis -- based on where this primary source fits into your chronology.

4b.    You have to highlight the most relevant and important analytical keywords in this, as in every other paragraph

4c.    You have to fit the paragraph into your overarching argument, but you also have to give the primary source some particular historical context.  Who produced it, when, why, etc.?

4d.    And, finally, you have to select from your good quotes the best excerpts that can serve as evidence without disrupting your own prose.