Thanks for sharing. I really like the integral molded fiberglass seats of the Thunderbird cruisers.
As a result of this post, I added model information from both a 1960 and 1962 Outboard Boat Trade-In Guide Blue Book to the Classic Boat Library. According to this information, the Blackhawk model wasn't introduced until 1960. From 1958 on, ABOS gathered information from dealers and manufacturers and published these Blue Books annually as pocket-sized references for dealers, insurers, and other industry folks.