Does anyone know of a way to contact someone at today's Silver-Burdett music education division? I'm interested in finding out about "mounts" that Horatio Parker used for grading submissions to the "Progressive Series." These include children's songs by well-known composers of the day (@1913) that Parker commissioned. Apparently Silver Burdett also kept copies of the correspondence between composers and Parker regarding the project. In the 1980s the music ed. consultant for the company was one Polly Carder. I'd like to reach someone there about these old materials. Any information would be much appreciated.

Jess Tyre