Question: Which one was established first, Kline Iron and Steel or Hummelstown Brownstone Company?
Sentence (from "Hummelstown Brownstone Company"): From 1863 to 1929, the Hummelstown Brownstone Company( HBC) owned and operated quarries in the Hummelstown, Pennsylvania area which produced Hummelstown brownstone, once widely used as a building stone throughout the USA.
Relevant evidence: Yes