A man (Campball) and three performers in matching outfits at the Paramount Theatre in Portland (now known as the Arlene Schnitzer Concert Hall on S.W. Broadway Street). They are standing in front of a large wheeled air conditioning unit (negative 11 of 13).

A woman at the Paramount Theatre in Portland (now known as the Arlene Schnitzer Concert Hall on S.W. Broadway Street). She is wearing a bathing suit and cap, and is holding her hands up pipes emitting water (negative 13 of 13).

Three women in matching outfits sit atop an air conditioning unit at the Paramount Theatre in Portland (now known as the Arlene Schnitzer Concert Hall on S.W. Broadway Street). A large wheel can be seen inside the unit, under the seated performers (negative 2 of 13).

Two women holding hands stand in front of a large wheel, making up part of the air conditioning system at the Paramount Theatre in Portland (now known as the Arlene Schnitzer Concert Hall on S.W. Broadway Street). They are wearing matching bathing suits, one showing a Jantzen logo (negative 3 of 13).

A woman at the Paramount Theatre in Portland (now known as the Arlene Schnitzer Concert Hall on S.W. Broadway Street). She is wearing a bathing suit and extending her arm towards a wall of mechanical units. A Jantzen logo can be seen on her bathing suit (negative 4 of 13).

A woman at the Paramount Theatre in Portland (now known as the Arlene Schnitzer Concert Hall on S.W. Broadway Street). She is wearing a bathing suit and cap, and is holding her hands up pipes emitting water (negative 5 of 13).

A man with air conditioning system at the Paramount Theatre in Portland (now known as the Arlene Schnitzer Concert Hall on S.W. Broadway Street). He is wearing a work coat, embroidered with “Campball” and is extending one arm to a wheel attached to a pipe. “Dayton-Dowd” can be seen on the front unit. Other pipes and wheels can be seen throughout the image (negative 7 of 13).

A man stands next a wall of switches at the Paramount Theatre in Portland (now known as the Arlene Schnitzer Concert Hall on S.W. Broadway Street). He is wearing a work coat with “Campball” embroidered on the front, and is extending one hand to a switch handle (part of an air conditioner system?). A mechanical unit can be seen in the foreground of the image (negative 8 of 13).

A photograph showing an Eastman air conditioner. The background has been removed from the image.