From reader Yvonne (in 2022):
One of the events that took our family to Morrison (other than travel to Denver) were the buffalo barbecues, sponsored (if I remember correctly) by the volunteer fire department, which was the beneficiary of one of the “surplus” buffalo from the group raised on the property now bisected by I-70. [Genesee Mountain Park, part of Denver Mountain Parks] The long side of the road across from Tabor Bar was a dirt parking area, just west of the quonset hut, and a huge, huge hole was dug in that parking lot where the fire was built and the buffalo barbecued. I don’t know for how long, but the result was a huge feast where the whole town turned out. Morrison has changed so much, but I never go through there without looking at the ghost of the parking lot and remembering the barbecues!
The rest of the story: By 1938, Denver’s buffalo (or bison) herds had grown to numbers that threatened to overwhelm the land available for them. The city started donating or selling extra animals– the previous year’s calves– to interested parties, from individuals to organizations and restaurants. By the 1960s, they had set up a formal auction every spring; money raised helped balance the cost of maintaining the herds.
Morrison History 