Michele 
This booklet, "Cartophilic Reference Book - No.7 : Directory of British Cigarette Card Issues (Past and Present)" (or RB.7), was edited by Eric Gurd, and signed off in August 1945.
It was then printed, by Parker Brothers, of St. Albans, in Hertfordshire, as a booklet of thirty-six pages, and sixteen illustrations, each of a single card - and published as a limited edition of four hundred copies, in 1946, to be retailed, to Society members, at five shillings.
Like all our individual reference booklets, it was superseded by The World Tobacco Issues Index (RB.21), which was issued in 1956.
However we know that after that time these books still remained in stock as when the Cameric Club merged with the Cartophilic Society, this was amongst the books listed as part of a half price offer, so that former Camericans, and new members, could buy one. By that time the normal retail price had risen to five shillings and sixpence, but the offer reduced it to two shillings and nine pence.
Strangely, this ident, of RB.7, was originally slated to be the number for the booklet which updated and continued the issues of W.D. & H.O. Wills (and would come to be known as "Wills part 2"). The Wills book was recorded as this all the way through to RB.4, the Gallaher volume, and even odder it was actually cited there as being “In Active Preparation”. However, Wills part 2 was not actually released until 1948, as RB.11
There is also very curious codicil to this work, for inside the back cover it states : "The companion volume to this directory is the Cartophilic Society`s "INDEX OF BRANDS". An alphabetical list has been compiled of the brands advertised on cigarette cards, and each brand is shown together with the manufacturer`s name, this providing immediate classification. This publication will prove a boon to every collector, and is invaluable for identifying cards where manufacturer`s names do not appear". The strange thing is that this book never appeared, though the idea of it still remained, and at one point it was again mentioned, with the idea of it being the future RB.23 .
When the Cameric Club merged with the Cartophilic Society, this "Directory" was amongst the books listed as part of a half price offer, so that new members could buy one. By that time the normal retail price had risen to five shillings and sixpence, but the offer reduced it to two shillings and nine pence.