Q. Do you have any information about Mason Bees?
We do not have much information on keeping mason bees. Most of our holdings are on keeping honeybees. However, I attach a pdf of Chapter 12, "Orchard Mason Bees" from
Delaplane, Keith S., and Mayer, D. F.. Crop Pollination by Bees. Cambridge, MA, USA: CABI Publishing, 2000. ProQuest ebrary. Web. 24 October 2014.
We also have a resource guide on Beekeeping.
Again, this guide is mostly about keeping honey bees, but it does give links to local beekeeping associations. Try contacting these associations to see if they have members interested in mason bee keeping. Also, do a Google search:
mason bee keeping pennsylvania
and see what turns up. I saw some promising resources in this search.