Hi Group,  Verna Djiji asked about the "Blue Book."  My guess is
that she is referring to "Automatic Musical Instruments Pricing Guide
1977-1978" by William H. Edgerton.  I suspect that it is long since
out of print.

The introduction says in part: "This is an historical record of the
asking prices of automatic musical instruments form 1967 through 1976.
Most of the sources of data from which this guide was prepared are
catalogs or price lists issued by dealers of these instruments, but
many, many sources are not listed."

It has a navy blue pyroxlin cover with a white imprint.  Its 192 pages
list hundreds of music boxes, coin pianos, and organs.

Jack M. Conway, Los Angeles, California, USA