Fred?,
I have a Sotheby's auction catalog dated January 22, 2005 that advertises the pair of Goddard roundabout chairs made for Nicholas Brown. These chairs are nearly identical to John Brown's but they have 3 claw and ball feet and the back leg is a pad foot. The scrolled knuckle terminals are also different. There are 13 pics with some being excellent close-ups. There's also some great text giving overall measurements I'll gladly loan it to you if you're interested in it.
Jeff