Who was Baldomero Lopez? You can use the internet to find the year he was born and the year he died.
Take the year of his birth and subtract 1867 to get the minutes for the N coord.
Take the year of his death and subtract 1545 to get the minutes of the W coord.
You'll find the cache at
N 28 05.???
W 082 36.???
You can check your answers on Geochecker.com.
Update 4/9/15: Checked on cache while in the area. It's there. But the memorial plaque in memory of Baldomero Lopez has been removed. I do not know who takes care of this place and if the plaques will be replaced. However, this cache will remain to remember what used to be here.