Sorry, hunter, no idea. I did just find out that Leavitt actually learned the trade from Brock before they became partners, after which he formed his new partnership with Peirce.
It's interesting to note that Leavitt, who never attended Harvard, was the only non-alum to be honored with membership in the Hasty Pudding Club, the DKE Club, and the Pi Eta Fraternity. On the day of his funeral the Harvard Square Business Men's Association requested that all shops fly flags at half mast, and be closed from 1-1:30pm.
It's interesting to note that Leavitt, who never attended Harvard, was the only non-alum to be honored with membership in the Hasty Pudding Club, the DKE Club, and the Pi Eta Fraternity. On the day of his funeral the Harvard Square Business Men's Association requested that all shops fly flags at half mast, and be closed from 1-1:30pm.