6/15/67 issue: "The Electric Circus is coming to town...opens June 28."
6/22/67 issue. I reprinted the text at the end of the original Circus post if you have any difficulty reading the copy.
7/13/67 issue: "You can do anything you want at the Electric Circus...Weekdays $3.50, Weekends $4.50. If you are barefoot, 50 cents off admission."
7/27/67 issue: "Dance at the Electric Circus. The Incredible Chambers Brothers." Dates are impossible to discern.
8/10/67 issue, full-page ad: "Bless You."
8/24/67 issue, full-page ad: "Be Human. We're having a party in the street, St Marks Place...Thursday August 24, 8:30 to 10:30 P.M. The price of admission is your smile."
8/31/67 issue, full-page ad: "Meet Sly. A whole new thing. Sly and the Family Stone will do it to ya. Where you can taste the Think Tank Drink." No dates given that I can see. The "Scenes" column in this issue discusses neighborhood opposition to the club: "The Electric Circus is overloaded and is not soundproofed. If the laws were enforced, it would be shut down."
9/7/67 issue. This one was repeated in several issues.
9/14/67 issue: "How to get to New York from the Electric Circus...Believe you can, believe you, believe, stay."
9/21/1967 issue: Same motto.
9/28/67 issue, full-page ad: "Without this man there would be no Electric Circus...Thomas Alva Edison, the man who turned the world on."
10/26/67 issue, full-page ad: "All Souls. Come to a Halloween Party at the Electric Circus dressed to exorcise the devils. (The most outstanding costumes win a trip.) October 28 at 9 p.m.
11/9/67 issue. Muddy Waters and His Blues Band--dates are illegible if they're there at all.
11/16/67 issue. Slightly different graphics, still no legible dates.
11/23/67 issue: "Clothes, furbelows & astonishments at the Electric Circus store."
11/23/67 issue. "An Electric Christmas at Carnegie Hall," co-produced by the New York Pro Musica and the Electric Circus, December 24 and 30, 1967.
12/14/67 issue: Further details on the Electric Christmas show. "Circus Maximus--Original Rock Music. Electronic Music by Morton Subotnick. Light Show by Anthony Martin."
12/21/67 issue: "Worship at the church of your choice...midnight December 24."
12/28/67 issue. "Avoid Drunks--New Year's Eve at the Electric Circus...Ecstasies by M. M. Koutoumas...Coffee at the Think Tank.
UPDATE 11/18/2011: Please see the revised and updated post on 1967 Electric Circus ads here.