John Long Ltd was a publishing firmFirms Out of Business
Retrieved 24/7/2022. based in

London London is the Capital city, capital and List of urban areas in the United Kingdom, largest city of both England and the United Kingdom, with a population of in . London metropolitan area, Its wider metropolitan area is the largest in Wester ...

and founded by John Long who died on 16 September 1935.JOHN LONG DIES AT 71; PUBLISHER IN LONDON; Founder of British Company Had Many Popular Authors on His List Before War.
Retrieved 24/7/22. John Long Ltd. had a long association with Hutchinson and was eventually incorporated, by the 1960s it had become an imprint of Hutchinson and was no longer in use after the year 1979.

References

{{reflist Book publishing companies of the United Kingdom Publishing companies based in London