Any more posts on this topic, and I may have start calling this the Assumption BVM Project. This one, however, is too good to pass up.
From Project reader Thad:
In March 2009, I had the opportunity to take photos of the interior of the Assumption of the BVM Church. (With permission, no trespassing.)
I'm sure you'd be interested in seeing them, here: http://www.flickr.com/photos/contrabass/sets/72157616239414392/
Truly a tragic situation. I fear it really may be beyond any reasonable attempts to repair it at this point. That interior is entirely of plaster, and it's all been heated, frozen, and wet for 15 years now. Stabilizing the structure and roof etc would only be the beginning... I have other interior shots if you're interested in seeing more.
Regards from a fan of Philly Church Project
Click on the link for the rest. Top-notch stuff. Abandonedamerica.org super photographer Matthew Murray is still supposedly working on his set, but this will more than tide you over until then.