From the Weld county Genealogical Society, there is a Alexander G johnson. He is listed as passing away 12-7-1961. While that might make him 95 yrs, it might be worth a look see. He is buried at Hillside Cemetery. They might have some records.
Not much on Carrie Johnson. no listing of passing or burial info that I saw.
Also, no obit for Hugh Glenn. There is a listing that might give burial info.
You might wish to contact the society for further info.
Good Hunting,
Frank