Thank you for such a helpful (and prompt) reply.
The title of all 10 issues is "THE Motor Boating World". Alas, the editor is never named in any of the issues so we don't know if it was the J.A Kolbe listed by the libraries. It was common in the pre WW2 period for pen names to be used. This publication has regular contributors writing as "The Man at the Wheel", "Cirrus" and "Waterman Will" among others.
I have found a couple of on-line examples of "The Motor Boating World and Auxiliary Yachting" and the volume and issue numbers are clearly a continuation of those on my 10 issues - the July 1930 issue is Volume 2 no 8. https://www.worthpoi...zine-1757513354
Given the difficult economic environment in 1929/30, I am not surprised that such a high quality and expensive to produce publication did not last. It carried a large advertising section with full page ads from Pratt, Gar Wood boats, Chrysler, Edison accumulators, Watermota, Elto outboards, Luberine oils, Shell, Thornycrofts, British Power Boat Co., Gleniffer motors and Chris-Craft. By 1930 I doubt all of these advertisers would have been lining up to pay for copy. I note that the full colour cover had been dropped by the October 1929 issue, so it seem the writing was already on the wall by then and cuts were being made.
Edited by taylov, 14 September 2018 - 09:59.