Johnsons advertised some of their 'chemical preparations' as being for 'Home Photography' when they were still trading under the name Johnson & Sons, as can be seen in an advert within the 'British Journal Photographic Almanac' for 1937. The description seemingly refers to smaller quantities suited to the home worker. Johnson & Sons were renamed as Johnsons of Hendon in 1948.

From the latter 1940s through to around 1970, Johnsons of Hendon produced a series of booklets entitled 'Home Photography'. Below are the covers of these booklets.
Mostly these are authored by Kevin MacDonnell and A.R.Pippard.

I acquired the 4th Edition with a small developing and printing kit which I purchased around 1960. That kit started a lifelong interest. I lost my original 4th Edition many years ago, but found another in a bookshop at Hay on Wye around the year 2000. Since then I have managed to collect together what I believe is a complete set of this very well written and illustrated guide to the essentials of photography, from taking the picture through processing the film to producing contact prints and enlargements.

More recently I've added two other booklets, both by Kevin MacDonnell, one being '35mm Cameraman' and the other 'Choosing & Using SLR Lenses', the latter published by Johnsons during the period they were called Eumig (UK) Ltd, i.e. between 1st February 1977 and 1981. I've also included a (probably free) booklet from the Schoolboy's Own Exhibition, January 1950. A little leaflet that 'recaps' (as they say in "Twenty Questions") what you've heard at the Exhibition.

Johnsons employed two printing firms over a period of 20 years to produce editions of their 'Home Photography' booklet. Initially they used Sawtells of Sherborne but later they (mostly) used Alf Harrison & Sons of Leeds. Information on these printers has come from a grand daughter of Alf Harrison.

In Amateur Photographer magazine for December 21st 1949, Johnsons have a whole page advert. mostly encouraging purchase of the 1950 Johnson 'Wellcome' Photographic Year Book but with a small section devoted to: "Bring The Boys". "When Christmas is over come and visit us at the SCHOOLBOYS' OWN EXHIBITION at the Horticultural Hall, Westminster, London, S.W.1. The exhibition is open during the holidays from 31st December to 14th January 1950. On our big stand there will be practical demonstrations of developing films, making prints and making enlargements. The boys will be able to see how easy it is to do it all themselves. Questions will be answered and they will be given practical advice." "Make this the High Spot of the Holidays."

'Photography' magazine for December 1951reveals there was a similar stand the previous year and also during December 31st to January 12th 1952 "run by Messrs Kodak and Johnsons of Hendon; Kodak dealing with the taking side and Johnsons with the developing, printing and enlarging." By now the invitation is less sexist, extolling that "parents of boy and girl photographers ought not to miss the opportunity of taking them to see the Photography Stand at the Schoolboy's Own Exhibition.."