The Number One Record Nationwide on July 16, 1966:
Tommy James and the Shondells'"Of all the lost-and-found singles rescued from obscurity in the Sixties, "Hanky Panky" must be the greatest, rocketing this Michigan band to stardom after three years of indifference. Singer James had formed the band as a mere hobby, and only cut the song in question -- written by Brill Building vets Jeff Barry and Ellie Greenwich and recorded by them as the Raindrops -- as a favor to Niles, MI disc jockey Jack Douglas (of WNIL) in 1964. Only after (Bob Livorio) another enterprising on-air personality in Pittsburgh found it in a box of rejects and started touting it as an "exclusive" did it start to make waves there."
--Robert Fontenot, About.com Guide
What else happened on July 16, 1966?
There were a couple of GREAT releases:
The Lovin' Spoonful,
JULY 16, 1966: A HECK OF A DAY IN THE EVOLUTION OF ROCK ‘n ROLL!!!