This is a salmon hatchery.

Bibliographic Details
Corporate Author:	U.S. Fish and Wildlife Service
Format:	Government Document Book
Language:	English
Published:	[Washington, D.C.?] : Dept. of the Interior, U.S. Fish and Wildlife Service, 1980.
Subjects:	Salmon fisheries > United States.

Description
Item Description:	"RP-56." "Formerly F&WS Circular 25."
Physical Description:	1 folded sheet (6 pages) : illustrations ; 23 cm.