Fruit tree on the campus of South Dakota State College was part of N.E. Hansen's research on fruit

Fruit tree on the campus of South Dakota State College was part of N.E. Hansen's research on fruit

Frank Denholm won first prize in the most handsome category during the Hobo Day in 1955.

Frank Denholm won first prize in the most handsome category during the Hobo Day in 1955.

Frank Denholm is the auctioneer at a sale selling livestock in Brookings, South Dakota.

Frank and Millie Denholm are riding in a convertible in the Hobo Day parade in Brookings, South Dakota.

Frank and Millie Denholm sitting in the stands watching the Hobo Day football game in Brookings, South Dakota.

Esgar S. McFadden (far right) with five others in their World War I uniforms

Edgar S. McFadden riding a horse in the 1917 Hobo Day parade at South Dakota State College

Rare portrait of Dr. N.E. Hansen without a beard, he is wearing an overcoat and a hat and seated in a chair

Dr. N.E. Hansen in a suit and tie and wearing a hat while he looks at bushes

Dr. N.E. Hansen and an unknown man are in a greenhouse full of flowers on the campus of South Dakota State College

Dr. N.E. Hansen and an unknown man are in a greenhouse full of flowers on the campus of South Dakota State College

Dr. N.E. Hansen and an another man are in a greenhouse full of flowers on the campus of South Dakota State College

Dr. N.E. Hansen and an another man are in a greenhouse full of flowers on the campus of South Dakota State College

N.E. Hansen standing by a small table in a room with horticultural displays of flowers and fruits