"It was while we were living in the second place near the lower Italian Hall that an incident occurred which is as clear in my mind as if it just recently occurred. The background of this incident was the great number of anarchists who lived in Guffey. This cell of anarchists was very active in the work of the society. Emma Goldman, the international anarchist, visited Guffey frequently. (…) When President McKinley died after being shot, there was a great celebration on the hill immediately above our home. Three kegs of black powder exploded and in order to hold down the kegs to generate the highest explosion possible, a piece of railroad rail, five or six feet long, was placed on top of the powder kegs, and then a fuse or squib used to ignite the powder. There was a great explosion, of course, and it blew the railroad rail into the air with such force that it landed approximately 100 yards away and hit the roof of the house adjoining ours. It penetrated the roof, thru the attic ceiling, the second floor, the first floor, and then buried itself about three and one half feet into the ground under the house!"
- transcribed account from Robert J. Brocker, January 14, 1963, from History of Sewickley Township, John J. Wilson (1971, self-published)