I'm looking at a tree of the DuBois Family (Etienne Joseph Dubois from France to Canada, d. Quebec 1742), and that person has sources listed but I don't know what they mean. I can access the Drouin Collection though I do not read French. Thankfully I have a friend who does, but some of the sources listed are prdh and #2 ? How do I find what they are to cite it properly? Thank you

Here's a link to the english home page of PRDH.  It explain what is PRDH.

http://www.genealogy.umontreal.ca/en/le-prdh 

About the #2, I think this is a reference to the two administrators of this site.

Yves.

Thank you Yves. Merci