An excellent effort. I am surprised and not that you are having trouble publishing it. So do it your self. Print it up in affordable batches on decent weight paper. Have it bound with a plastic comb binder and sell it at reanactments to raise money for those brave boys in blue well all know so well.
The Battery "B" people in B'Ville would do it if they had the talent.
Contact Dr. Dan Ward at the Onondaga County Cultural Resources Council about the project and see if he can't stear you towards a grant.
I'd like to see song books sold as discs in a friendly format like WP7.0 or MSWord. That way I could down load the stuff I need and store the rest in a more space friendly format. Or I could print the whole thing up as a document and still store the original.
You work is great, I am envious. Come hear the band some time. We are at Coleman's on the first Sunday in June 5:00-8:00.