November 28 & 29, 1884 Academy of Music  

February 27, 1885 Oratorio Hall (Unknown location) 

Twain interviewed 28 November 1884  "Mark Twain's Ideas: A Talk with the Humorist" Baltimore American, 29 November 1884, Included in "Mark Twain: The Complete Interviews" by Gary Scharnhorst (#23)

December 29, 1884 Cumberland Presbyterian Church. Unable to find location.  

Interviewed: "Mark Twain Gets Shaved", Pittsburgh Penny Press, 29 December 1884, p4  In "Mark Twain: The Complete Interviews" (#27) 

Monongahela House  "Talk with Twain" Pittsburgh Chronicle, 29 December 1884, p1. (#28)  Mentions that the location of the church is on Sixth avenue.