I believe I have found the resting place of one Francisco Campos Aguinaga. He died in 1915 after a mining accident in Southern Arizona a few years earlier. His civil death states he was put to rest at the Panteón Francés de la Piedad in Mexico City. (The other Panteon Frances was built in the 1940s.) 

An acquaintance was able to get photos of the crypt and marker.  However the surname on the larger crypt is different. It is marked "Familia Casasola." The marker at the foot of the crypt, "164," is the only indicator, that helped to find Francisco's plot.  (I've included photos of the grave site.)

Other than the civil death record I have no other way to verify that this is our guy. 

Now it gets interesting. 

After help in locating the plot with help from the Mexican Consulate in Texas,  and a genealogist in Mexico DF who took photos, the cemetery is now saying that the plot may not have been fully paid for back in the day. (Is this customary?) The family would like to help restore at least part of the crypt (hasn't been touched in decades were told). But so far I have no deed/land record to verify. (Should the cemetary have this? )

I'd like to obtain more sources about the burial and am asking the cemetery to provide such, especially since he was apparently buried there. 

Im not sure where else to go on this. Any suggestions would be appreciated. 

civil death:

https://www.familysearch.org/ark:/61903/3:1:33S7-9R29-7TG?i=4872&cc=1923424&personaUrl=%2Fark%3A%2F61903%2F1%3A1%3AQG4X-BPC3