Can anyone provide a list of authors living in or around Washington, D.C.?

I need to compile a list of local authors living in the D.C. metro area for my bookstore- any genre will do.

Can anyone provide a list of authors living in or around Washington, D.C.?
That is going to be a hard list to compile the only list I can find are


1 By name


2 By type of writing or genre


3 By nationality, race, origin or gender


4 By language (non-English)


The only website I found remotely close was www.washwriter.org

innia