I came across a number of references to Jon Martin under the post,'De Bierre, Keating & Williston Van. Birdcage' in Platform & Stage Magic. Granville Taylor (Faust) from Nelson, Lancashire, UK. has just completed a book entitled John Martin The Master Magical Mechanic.
It has 105 , A4 size pages. Limited edition of 250, all numbered & signed. There are 24 pages in full colour with over a 100 colour pics and TEN (10) detailed Workshop Plans of Martin Replicas actually made by Granville Taylor, who owns many Martin made pieces. Cost is 60 + %;50pence p/p/ or 12 airmail. Details should be on his website. He's selling some at the magic Circle Centenary Celebs at the Hotel Russell Square, London on 23rd. 24th. July. I have never met Granville Taylor, who as a young man was assistant to Murray and The Great Lyle, but on at least 2 occasions he was kind enough to send me pics of his full illusion shpow & the amazing Amac's Find The Lady,(which he owns) . I saw The Great Lyle present it but alas it's never, as far as I know been filmed for posterity.
Allen Tipton UK