The Hidden Spring
Directed by	E. Mason Hopper
Written by	Clarence Budington Kelland Fred J. Balshofer Richard V. Spencer
Starring	Harold Lockwood Vera Sisson Herbert Standing
Cinematography	Tony Gaudio
Production company	Yorke Film Corporation
Distributed by	Metro Pictures
Release date	July 16, 1917
Running time	50 minutes
Country	United States
Languages	Silent English intertitles

The Hidden Spring is a 1917 American silent adventure film directed by E. Mason Hopper and starring Harold Lockwood, Vera Sisson and Herbert Standing.^[1]

Cast

• Harold Lockwood as Donald Keeth
• Vera Sisson as Thora Erickson
• Herbert Standing as Quartus Hembly
• Lester Cuneo as Bill Wheeler
• Doc Crane as Daniel Kerston
• Arthur Millett as Olaf Erickson
• Billie West as Undetermined Role
• Claire Anderson as Undetermined Role