The kind folks over at BobDunsire had the answer, as follows:

"A good source would be the Army Manuals(British) published during the 1930s. There are two books of tunes, the generally easy old ever-green tunes. Each book has a selection of "generic" drum settings in a variety of time signatures that can be used with damn near anything. You might check out the SCOT PRESS in West Va to find a copy of the manuals. The manuals were developed when it was realized that no two battalions were inclined to play the same tune arrangement. A couple of PBs playing in concert often turned in to a cacaphonous(sp) fiasco."

The Army Manual of Bagpipe Tunes, Book 1 & Book 2 mentioned by the kind poster can be purchased as downloadable PDFs at ScotPress's website here: http://scotpress.com/catalog/scottis...-book-1-p-1363

Viola! Thanks for your help, everyone! Regards, BYU