Columbia's 15000-D series was the record industry's first acknowledgement of the commerciality of American rural music. This comprehensive discography documents all 783 78 rpm records in the series, recorded between 1924 and 1933, including a numerical listing, session locations, recording dates, matrix and take numbers, label copy, and sales data. Plus: special sections on the 20 best-selling records in the series, a listing of all known Royal Blue issues, and an introduction on the series' history. Includes over 100 full color images of record labels, and photos of session locations and original Columbia advertisements. In his foreword, country music scholar Norm Cohen writes, "Cary’s work will take its place on bookshelves next to two other major resource tools for students of hillbilly and traditional music: Tony Russell’s Country Music Records: A Discography, 1921-1942 (Oxford University Press, 2004); and Country Music Sources: A Biblio-Discography of Commercially Recorded Traditional Music (UNC and JEMF, 2002). None of these works can replace the others; all are essential works."