From the Sept. 21, 1907 NYT:

PITTSBURG - Intense excitement was caused here this afternoon when an Anarchistic notice was found posted on the high board fence which surrounds the old cathedral property, for which H. C. Frick paid $1,300,000...

The notice was written on a typewritter, and was perfect as to spelling and punctuation. It was as follows:

ANARCHIST'S NOTICE

Murder the Rich and Burn their Homes.

Too long have the working people of this city been trampled by the rich. How easy it is for them to enjoy themselves, when they grind out the lives of the poor to add to their riches! How easy it is for them to enjoy themselves by sacrificing men's lives! Join with us and redress your wrongs. We have suffered too long.

We want agents to murder the rich and burn their homes. Wages, $10 a day. If you are the right kind of a man, go to the corner of Wood Street and Fifth Avenue, and a man will give you the proper sign.

EH.net suggests that nominal GDP per capita was about $390 per year, or approximately $2 per day. Now, if the redressing of wrongs provides a "good," the "right man" should be willing to pay for the privelege. Having to pay five times the average day's wage (and 8 times what Rockefeller paid his summer help), suggests that the recruitment of anarchists, and especially those who would be willing to commit murder and arson, was not easy.

The police at first think the posting is a joke but then:

they noticed several suspicious persons at the corner of Fifth Avenue and Wood Street, [and] they arrested them.