Welcome to the Mudcat, EuGene. If you click on the "Links" up on the top bar, it will take you to a page where you can choose "Sheet Music" and be led to an alphabetical listing of links various Mudcatters have posted over the years. In particular you might want to check the Lester Levy Sheet Music link. A lot of it may only be for voice and piano, but ya never know.

Also, have you asked around at any local high schools or colleges? Maybe they have a music lending library.

Failing that, my brother, a composer,would be able to come up with someone for you, but I don't know if he'd have the time and he would have to have some kind fo compensation. He studied with American composer, Roy Harris, who did arrange some folk songs, but not for band that I know of.

Good luck!