Thank you, amorrison4, but I've already checked the website (and the other helpful one, www.seabee.info, but they don't have anything on the details, either. Boy, I'm really out of the ideas...
But thanks for the input, amorrison4!
I'm looking for information on the details of the spot welding done on Republic RC-3 Seabee, a seaplane produced in 1946 and 47. More than 1,000 were made and many are still flying, and one of the keys to their low cost construction was the spot welding extensively used on the hull and flying...
