Thanks to all who responded. I live in the Boston, MA area. The nearest repository that has a good run of the magazine "Talking Union" is the Performing Arts branch of the New York Public Library. I sent an inquiry to them. What I'm now most interested in is the apparent lyricist, Glenn Plummer. Teldir.com lists eleven people in the US by that name, with snail mail addresses. I haven't bothered them. Does anybody know the Glenn Plummer in question? Or anything about him?