What I would find of interest (as well as a great help in updating my DG!)
would be a classical-music discography which was (1) 78-related, and (2)
was similar to Brian Rust's noted works...a sort of "'Complete' Discography
Of Classical Recordings, 1890-19(??)."
Those familiar with my work will find many classical-only series either incomplete or totally missing...simply because I could find no reference works available in the field...!
Steven C. Barr