The Flying Dutchman USA Association has added a collection of the international bulletins from 1958 to 2019.
You can view them by clicking on this link.
https://sailfdusa.org/bulletin/?fbclid=IwAR0jLNW4S3CpuKCTvuscawSmV_6g856KxYoUO50XFcUGdbowmJjYIgDlUOw