Hoban .22 single shot

I was recently given a little Hoban single shot rifle by a sweet lil ol' lady. The stock's in rough shape, but nothing that can't be fixed. The metal on the rifle is good and there is a little bluing left. However, the extractor is missing and finding one is virtually impossible without finding and buying another rifle for parts. The intrinsic value of the rifle negates this option, but I would like to fix it. Would anyone on here happen to have one and possibly send me some measurements and/or pics so I can try to fabricate one myself?

http://www.thehighroad.org/showthread.php?t=91165

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