Back in the 70s, when I had my Daytona, I contacted Angelo Wallace about a copy of the 365 GTB/4 workshop manual he had translated. I had a 365 GT4/BB WSM he had not seen, so we made a trade. I loaned him my BB WSM and he sent me a free copy of his Daytona translation.
The WSM was worth its weight in gold to the only Ferrari mechanic in Clovis, NM, me. It showed me how to build my own distributor test machine that tested everything except advance, which needed to be done at 5000 rpm, and explained all the nuances of setting up the four sets of points.
Angelo eventually translated the Daytona, Dino 246 GT, 330 GTC/GTS, 365 GTC/4, and 365 GT4/BB/512 BB/BBi WSMs, the Boxer transations all in one volume.
I thought there might be a few of you who could use these translations, so here is the last contact info I have for the WSMs.
If anyone knows what happened to Angelo, I would love to know. His wife Mary was selling the translations a long time back, maybe 20 years. Ferrari Service Manuals