Founded by Les Johnson and Ted Carnell in 1937, the Science-Fiction Service was the first SF book-selling business in Britain, though the name they used for business purposes was that of Johnson's brother, as can be seen on this letterhead from 1937:

In 1938, its city centre premises became home to the meetings of the Liverpool SFA group. The catalogue reproduced here is from the end of that same year, by which point Les Johnson is no longer among those listed as running the business. After the war, it morphed into the Milcross Book Service:

The catalogue that follows is the earliest in the Vince Clarke Fanzine Collection and also the only printed one - the later ones in the collection are all mimeographed.

(Disclaimer: It should of course go without saying that this catalogue is presented here purely for historical interest and that none of the items listed are available for sale any longer. It should go without saying, but there are some odd people out there.)

For those unfamiliar with it, pre-decimal UK currency is explained here