Just saw this on the North American Fishing Club website. Below the photo is the text from the site.

Some fish tales you have to see to believe. This is one of them. It’s no fisherman’s lie; it’s a true incident that’s never been told. Until now. Thanks to NAFC member Bill Gautche, founder of the Billy Finn Lure Company, who discovered and unveiled this mind-boggling photo from decades ago.
The year: 1962. The scene: An old rec hall on the shores of Lake St. Clair, with a motley crew of muskie addicts from Detroit and St. Clair Shores. The legend: 53 muskies displayed by 47 anglers… caught in a two-day span that might be the hottest muskie blitz ever documented.
“People were talking about it all over the place, but nobody could believe it,” says Gautche, a board member on the National Freshwater Fishing Hall of Fame, who’s only shown the photo to a half-dozen friends before. “We went out in 18-foot open boats or 27-foot small cabin boats and trolled with four rods to a boat in 4- to 8-feet of water.”
The hot lure: The newly invented SwimWhizz, fished by the inventor himself, Capt. Homer LeBlanc (pictured in the front row with the black hat… and the biggest muskie).