Convair Model 6
http://rides.webshots.com/photo/2931511060048918155qsFJEHSeen here was the next logical step for Convair, marrying the swept-back wings of the YB-60 and the fuselage of the XC-99. The Model 6, however, retained the rounded cockpit of the B-36 rather than the airliner-style windows of the XC-99 (Model 37). The YB-60 was Convair's proposal for a large long-range heavy bomber; this was based on the B-36. Only two YB-60s were built; the USAF opted for Boeing's Model 464 (better known as the B-52) instead. This rare illustration comes from Dennis Jenkins et al., B-36 Photo Scrapbook, (Hinckley, Leics.: Specialty Press, 2003), p. 85. This is the companion book to Magnesium Overcast, by the same authors.