Barcode prefixes for each institution
31194: American
30530: Catholic
32884: Gallaudet
32777: George Mason
32882: George Washington
39020: Georgetown
30770: Georgetown Law
37010: Himmelfarb (some volumes have WRLC item barcodes)
35969: Howard
32883: Marymount
37090: Trinity
32105: UDC
37010: WRLC