One of the more valuable tools for researching these old boats are newspaper databases. Lots of information out there from period articles and notices of stock issues, plant openings, fires, bankruptcies, and so forth.
The past couple days I have focused on the little-known 1950's Florida boats such as "Crest Craft", "Gulf Liner", "Muir-Maid", "Flare", and so forth. Google has indexed and made freely available the St. Petersburg Times, Lakeland Ledger, the Miami News, and a few more newspapers that have been of use in this research. When I find substantial information, I create or add to the relevant entries in the FiberGlassics Library with appropriate citations documenting the source of the information. We are finding search engines are picking up on information in the FiberGlassics Library and bringing in lots of folks with family connections to 1950's boat companies and those just searching for more information on their old boats.
Anyhow, I have attached a recent find- a news article from the Oct. 12, 1957 St. Petersburg Times and found through Google's news archive. The news article is on CarAqua Boats which sheds some new light on the company. This article provides a description of the CarAqua and gives a tip on a previously unknown person behind the development of the CarAqua, Bill O'Keefe. Also previously unknown, the CarAqua was intended to be developed further into an amphibious model.
news.google.com/newspapers?id=OAhSAAAAIBAJ&sjid=JnYDAAAAIBAJ&dq=dick-bradley%20fiberglass&pg=5415%2C5083861