Gold-rush traveller Asa Bement Clarke and boundary commissioner John Russell Bartlett both reported seeing a meteorite used as an anvil by a Tucson blacksmith called Ramon Pacheco around the mid 19th century.
Bartlett provides this description of the meteorite he examined at Tucson and provides an accompanying sketch:
'a remarkable meteorite, which is used for an anvil in the blacksmith’s shop. This mass resembles native iron, and weighs about six hundred pounds. Its greatest length is five feet. Its exterior is quite smooth, while the lower part which projects from the larger leg is very jagged and rough. It was found twenty miles distant towards Tubac, and about eight miles from the road, where we were told are many larger masses.'