P.S. Most of what I know about guitars (which isn't much!) I've learned from record sleeves and the Mudcat but I understand Lonnie was one of the first people in UK post-war to play a Martin which cost him something like £20 at the time, which led to it being known over here. The website I referred to in my last post mentioned Martin were going to produce a LD model (presumably one where the strings break at least once per performance!).
RtS (His autobiography "All Roads lead to London" was published in 1997 by Souvenir Press but I've not been able to find it and it is now out of print, if anyone sees a reasonably priced copy let me know, couldn't find one in Hay on Wye earlier this year!)