For detailed coverage of the post war period the author refers us to William Daniels’ fine book In most cases the charts give the number reached by January and June of each year, so that release and recording dates can be approximated to the nearest half‑year.
At one point, in 1923‑1924, the label even issued weekly supplements, making precise dating easy.The was checked against primary sources for Victor’s principal popular series (18000s‑21000s) for January of each year from 1920 to 1929.August 17, 1993 The Almost Complete 78 RPM Record Dating Guide (II). As it is, he at least gives us a prominent, detailed index which indicates where to look for all the pieces. The scope of coverage of this new is awe‑inspiring. Published and distributed by Yesterday Once Again, P. Although this new edition is better organized than its predecessors, it still suffers from “scattered‑information‑syndrome.” For example, in the case of Columbia a helpful two‑page history of the label is found on pp. 25‑31, descriptions of label types on p.150, an explanation of the “W” (electrical) symbol on p.166, and a listing of matrix series appearing on other labels on pp. Additionally, labels are not presented in alphabetical order but rather in one of eight sections organized by era, “major” vs. Perhaps the author would consider for a future edition rearranging his listings into one big alphabetical list, A‑Z, with all information on each label grouped together in one place.It should be noted that the 2000’s were skipped, so 1905 is off by 164, not 1164.
From 1905‑1909 the “primary” column reflects supplement dates (which is what the seems to have used); beginning in 1910 Columbia supplements explicitly stated that records would be placed on sale at the end of the preceding month, so “primary” reflects the placed‑on‑sale date.To verify matrix series I checked three labels: Pathe from 1919‑1923, Gennett in the 1920s, and ARC in the late 1920s and early 1930s.There are no recording ledgers surviving for Pathe, so a comparison was made with Brian Rust’s standard discographies, which have been indexed by matrix number in a running listing in its relatively wide circulation, and the use that will be made of it as a primary source for other work, this review has gone into some detail on its pluses and minuses.To be fair Victor’s release pattern was very erratic during these years, with many numbers issued substantially out of sequence.Any chart for this period by definition must be “approximate.” Unfortunately the gives us little indication which data is precise, and which is not.The major discrepancies are for 1905, 1908 and especially 1909.