Above photo is from the March 1962 National Geographic Magazine.
Vol. 121, No. 3, pages 376, 377

In 1962, ballooning spinnakers and mainsails trap the breeze on the Hudson River at Nyack. The sign in the forground identifies the Nyack Boat Club. The WD22 Lightning Sailboat, shown at left in the picture, was built by Newton Durland at the Durland Boat Company. The WD on the sail stands for Winslow-Durland. The boat was jointly designed by Ralph Winslow and Newton Durland.  Ralph Winslow was a Naval architect.  It’s listed on the Mystic Seaport site as “Vessel Design: 26.42 WINSLOW-DURLAND 20, 20′ sloop yacht”, follow link:
Click here for Ralph Winslow Biography

The above photo shows vintage ’50’s boats in the Durland Boat Company showroom.

In addition to selling boats and motors, Grumman canoes were also sold.
Other inventory included Gator trailers, Woolsey and Interlux paint products,
and all types of boat parts and accessories.