> After a bizarre incident at Steinway’s in New York in 1959, when one of the senior technicians (whom Gould disliked because of disagreements over piano regulation) greeted him with a rather too hard clap on the shoulder, Gould claimed major physical injury, cancelled all his engagements for six months and (unsuccessfully) sued Steinway’s for $300,000.

Hm... Horowitz's tuner Franz Mohr wrote a book where IIRC he claimed that Gould reacted negatively to his retouching of the action on Gould's piano, complained that he could have been injured by it, and threatened to sue him. I wonder if this is a different version of that same story (Mohr would have been a senior tech at Steinway at that time) or yet another tuner who Gould harassed.