Lost and Found-The Frangipane Recipe

I have a very haphazard way of keeping recipes.  Some of my favorites are written on backs of receipts, on the side columns of address books, random pieces of paper.... I never seem to learn my lesson either. There is a chocolate orange cake recipe that I can still taste and must be in my possession but I just don't know where.  Its been years and like trying to relive an old love affair by having a new one, the recipes I try, hoping its THE one, just make me sad.
I've gone on like this with my frangipane tart recipe-trying various ones on the net, in books, etc.  Good, but not quite the toothsome, soft center and tan chewy top from my long lost favorite. Then, going through a very old cookbook, out it fluttered-