Before I call, where are they located? If they're in PA, I'm heading toward there before winter and could thus avoid shipping costs.
Google disgorged this:
Dillsburg Aeroplane Works, (717) 432-4589, 114 Saw Mill Rd, Dillsburg, PA 17019
and
Vogelsong Charles T, (717) 432-4589, 114 Saw Mill Rd, Dillsburg, PA 17019
And my 1997 Rand McNally gives Dillsburg as being slightly closer to Harrisburg (on Rt 15) than Gettysburg.
FWIW.
Generally you'll find that if it's listed as a material for building airplanes the quality is where it should be.