Jeff,
The photos presented were shot on November 25, 1940 at Barnegat, NJ. The model releases for the duck hunters in the pictures indicate they were residents of Barnegat, NJ. As to who made the boats the best guess would be Perrine’s Bot Works.
“Perrine’s Boat Works started in 1900 and was owned by J.Howard Perrine and his father Samuel Perrine. Before it was Perrine's it was an old school house in Barnegat, New Jersey. At the boat works, they built and improved upon the original Barnegat Bay Sneakbox making it better to use for duck hunting, clamming, and oystering.”
By 1920, Perrine’s made a 15-foot long sneakbox. These sneakboxes were used for inshore sailing. Perrine’s Boat Works made and sold over 3,000 of these sneakboxes in the United States.
If you would like to know more about Perrine boats, visit this link:
http://www.lehsd.k12.nj.us/SummerSea...0Boatworks.htm