bs-aaw-HowardTerpning-FieldHeadquarters-ArizonaTerritory1885 Howard Terpning

The picture has something of this: people, cavalry, man, mammal, seated, group, transportation system, adventure, skirmish, military, woman, war, vintage, tent, desert, weapon, recreation.
Perhaps it’s a painting of a group of people sitting at a table next to a horse in a field with a teepee and a tent in the background.