That is correct. The Week Ending 6-22-67. "It Could Be" is #5 on the Hit Bound. At I recall, it wasn't a big hit at WTAC, but was probably played for 2 or 3 weeks. Some Surveys show the Dates and Venues. The New Colony Six was another group that played at Bob Dell's promoted venues. I'd have to look through them to find them.
http://las-solanas.com/surveys/WTAC/WTAC_1967-06-22_1.jpg
The most significant thing about it is not only did Bob play it first, it's the quintessential Rare Regional Chicago Garage Band Hit. Wish we had a paper or air check trail like this for John Landecker at WTRX in 1966, who was "Jones Boy" Dow Jones, a unique Jones name he picked himself as a "Jones Boy". No other DJ used Dow Jones. Spike Jones (Ken Sands) was another unique name. Ken was the recording engineer who did some rather famous Motown mixes, like "What's Going On" by Marvin Gaye, "Ball Of Confusion" by The Temptations, and the sirens and gunshots in "Indiana Wants Me" by R. Dean Taylor.