This is an original Tiffany window, signed by Tiffany himself. I haven't been able to find much information about it, but it is breath taking. It can be found in the College Hill Presbyterian Church in Easton, PA.
All Saints Chapel is the chapel for the University of the South (Sewanee, Tennessee). The construction of the chapel took over 100 years before finally being completed in 1959. The design of the church was created by Ralph Adams Cram in 1904, but weren’t used until a Vice-Chancellor named Edward McCrady pushed for the completion of the chapel to commemorate the school’s 100 year anniversary. "Sewanee" is a university of the Episcopal Church.