Vocalion release dates are not available 1926 but for 1927 from Talking Machine World though, and that might present confirmation and non-confirmation for your assumption:
- Vocalion 1067 by Rev.S.J. Worell (Steamboat Bill) was actually released in February 1927 (day 24), see TMW Feb 1927, p. 143.
- In Jan 1927 Luella Miller had recorded two more records for Vocalion (1080 and 1081), and the second of these was already announced as new release in TMW Mar 1927, p. 143.
@ Mike Gann
Thanks for adding the image of an ad from the Chicago Defender (19 February 1927) that shows this record as a new release, suggesting that it was released in that month. If your assumption is right, Vocalion would have released these non-sequential numbers of its Race series at the same time: 1022 (Cotton Belt Qt.), 1044 (Luella Miller), 1059 (King Oliver), and 1067 (Rev.S.J. Worell).
In fact, release dates of Vocalion records of that time are hard to nail down, as catalog numbers were apparently allocated not in the intended sequence of the releases but rather depending on recording dates, see http://www.78discography.com/VOC1000.htm, and Talking Machine World misses any Vocalion releases in these months.
Anyway the opposing date on Rate Your Music (Sep 1926) has not been sourced and was just a guess. In contrast, I am inclined to approve a change to Feb 1927, although I wonder why ever the label would have waited seven months from this debut recording to its release. Maybe we can find more information about it before we eventually change the date here.