B0284. THE VICTOR BLACK LABEL DISCOGRAPHY, Vol. III: 20000 – 21000, (1926-29), by John R. Bolig. Denver, CO, Mainspring Press, 2010. 391pp. Full discographic details from the original Victor Talking Machine Company and Gramophone Company files, and the original catalogs and discs; Recording dates and locations, including details of imported matrices; Matrix and take numbers; Catalog numbers for all corresponding U.S. and foreign 78 issues; Details of alternate versions and cancelled numbers; Accompanists, conductors, pseudonyms, and group personnel as listed in the original files; Artist and title indices; Historical introduction with numerous illustrations & photos. - 978-0-9825595-1-2
"What distinguishes this discography is that the information originates entirely from original sources... It's simply a 'must-have' reference for the collector, discographer, and institutional librarian."
— The Record Collector
"Carefully prepared work... The true enthusiast cannot manage without all the resources mentioned here."
— ARSC Journal
"The Victor 20000 and 21000-series issues have long been the subject of myth-making and questionable research methods.
Now John Bolig strips away the guesswork and fabricated data to offer a revealing look at exactly what is — and is not — contained in the original Victor, RCA, and Gramophone Co. documentation."
- Ned Ludd