I have just put a copy of the ca. 1950 Bate&Slice 'An Approved Treatise on Hawks and Hawking', Bert on Ebay. If you are a short-winger with a sense of history, please check it out;
I think this is the link (?)

http://www.ebay.com/itm/261142501222...84.m1555.l2649

Item number: 261142501222