All samples were analyzed by acquiring positive-ion mass spectra with the DART source operated with helium and a gas heater setting of 450° C (helium temperature ~350° C). All mass spectra were measured over the m/z range 60-1000 at a resolving power of 6000. Following each analysis, a glass rod coated with PEG 600 was placed in front of the DART source to provide a calibration for exact mass measurements. A nominal mass library of adhesive mass spectra was created by using the software link to the NIST version 2.0 mass spectra database search program. All figures shown here are copied from that library and only integer masses are shown although exact masses were recorded for all peaks.