The 1940's ...  
Camp Teedyuskung. Lots of folks vacationed at the Lake in the 1940's. Here's a view looking toward the East shore and the Outlet from Camp Teedyuskung.  
Henry Weber's Landing. Henry Weber use to rent out boats at his Landing on the East Shore. The photo below shows 3 ladies, 2 gentlemen, and a little girl about to go for a row on the Lake. And they're doing the classic 'Weber' row - rowing transom forward. Lots of pickrel weed in the background. And a suspension dock, too. Circa 1940.  
Lassly's Landing. Now McArdle's residence, this site looks like Henry Weber's Landing. Notice the long wooden boats. The photo looks like it came from a vintage postcard.