WHS / Kingsway
The Kingsway Series of Cards were published by WH Smith and Son from 1906 onwards into the 20s/30s. I've yet to identify a dated card from Abingdon that predates 1914.
TVAP
I find lots of cards by TVAP when trawling eBay - so far all appear to be 40s/50s onwards. TVAP is "Thames Valley Art Productions" and an EH Simms was working there, if not running the business (see Maxwell Fraser Papers, National Library of Wales). An Edward Herbert Simms (b. 6th June 1902) appears on the 1939 Register as a "Printing Machinist" and an Edward Herbert John Simms on the birth register for 1902. It looks like he died 30th October 1990 and is burried in South Hinksey. I think it's safe to conclude from his age that no TVAP cards can be Edwardian.
Burgess and Sons
There's a series of postcards produced in collaboration between Burgess and son, and Photocrom of Tunbridge Wells. These all feature serial numbers between 53291 and 53301. 53296 is of the War Memorial which was unveiled on the 11th September 1921. This series of cards likely dates after this.
Frank Smith
Frank Smith published a series of numbered cards of Abingdon running from 500 to at least 509. Dated examples that I've collected are between 1907 and 1910.
Valentines
Valentines card serial numbers:
- 1896 - 25168 to 25180
- 1901 - 36302 to 36321 (except 36308)
- 1907 - 57164, 57165, 60082 to 60087
- 1924 - 93499 to 93513
- 1931 - 213976 to 213987