For the First Time the Screen Enters the Terror World of the Unknown Superbeast! He'll Freeze You to Your Seat! (Akron Beacon Journal, October 26 thru November 5, 1957)

 

Saturday, October 26, 1957:

Sunday, October 27, 1957:

Monday, October 28, 1957:

Tuesday, October 29, 1957:

Wednesday, October 30, 1957:

Thursday, October 31, 1957:

Friday, November 1, 1957:

Saturday, November 2, 1957:

Sunday, November 3, 1957:

Monday, November 4, 1957:

Tuesday, November 5, 1957:

Bonus Content: 

Alas, all efforts to unearth anything on the tenants of the "Shock Endurance" test needed to gain entrance to the theater, but I did find a few articles on the mysterious beast they were hunting for:

The Urbana Daily Citizen (June 6, 1957):

The Cincinnati Post (June 6, 1957):

Sidney Daily News (June 4, 1957):