Wilbur Powerhouse Mac/PC lab has three standard size flatbed scanners and a color printer that accommodates 11x17 and letter-sized paper.
Mountain Hawk Design and Print Center can print larger-size files and can scan larger sizes as well. as of 12/10/18 As of December 2018 they offer:
Scanning up to 11x17
Printing an area of 61" wide x any length
A wide range of material (they can provide a sample of their popular stocks)
Their digital printing department can stitch booklets, up to a size of 13x19
Cogan Blueprint in Bethlehem, 200 E Broad St, Bethlehem, PA 18018 (610) 868-7404
WGraphics in Easton, PA.