I think its cool to try and figure out a t206 sheet, but I also think
34 Sweet Caporal 649
34 Hindu south
34 Broad Leaf 460 possible
the 68 Coupon 1 could be two 34 card sheets
the 102 major league Hindus could be three 34 card sheets
and there are plenty more times 34 comes up when you really analyze the set
I believe 34 is to strong to ignore but just like what you have printed above there is no proof.
Another possibility it could be a couple different sizes. Hopefully one or more sheets show up one day. That would really be cool.
As for Readers book, I would also ad The Monster and The Mysteries of T206 along with several other hobby publications as a must read and all can be found here
http://t206resource.com/Publications.html