Michele 
This booklet, "Cartophilic Reference Book - No.19 : The Cigarette Card Issues of W.D. & H.O. Wills Parts I to IV (revised) and Part V - An Official Checklist Compiled by A Committee of the Cartophilic Society of Great Britain Limited" (or RB.19), was edited by Edward Wharton-Tigar.
It was then printed, by Collins & Wilson (T.U.) London E.C.1. as a booklet of forty pages, and twenty-nine illustrations, showing a total of three hundred and eight cards - and published as a limited edition of five hundred copies, in 1951, to be retailed, to Society members, at ?.
Like all our individual reference booklets, it was superseded by The World Tobacco Issues Index (RB.21), which was issued in 1956.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 twelve shillings and sixpence, but the offer reduced it to six shillings and three pence.