AKC has been keeping records on all breeds and for our interest specifically, the Scottish Terrier. You may look at the statistics gathered from AKC Gazette, by clicking on the link below. You will see that in 1936 there was a goodly number - over 700 in one month to compare and again in 1969 - over 800. These numbers run from 1925 to 1994.
More coming soon.
Provenance of Janet Tomlinson, Historian.
Stud Book Registration Statistics by Janet Tomlinson, Historian