The Catalogue of Nordic Instrumental Music for Colleges and Universities, of works selected by Mark Lammers and published in 1991 from work he did from 1987 through 1990 has been updated.  The Nordic Cultural Fund sponsored the update which was completed in August and September of 2006. The 2206 items in the catalogue include works for band, orchestra and the instruments of those ensembles in solo and small group forms.  The catalogue is open to all at the WASBE website's Resources page. There are now 117 listings for trumpet as well as 168 for various brass ensembles. 

Link:
WASBE resources page