Sinews of Steel
Directed by	Frank O'Connor
Written by	Herbert C. Clark Henry McCarty Delos Sutherland
Produced by	Samuel Sax
Starring	Alberta Vaughn Gaston Glass Anders Randolf
Cinematography	Ray June
Edited by	Edith Wakeling
Production company	Gotham Productions
Distributed by	Lumas Film Corporation
Release date	April 4, 1927
Running time	60 minutes
Country	United States
Languages	Silent English intertitles

Sinews of Steel is a 1927 American silent drama film directed by Frank O'Connor and starring Alberta Vaughn, Gaston Glass and Anders Randolf.^[1][2]

Cast

• Alberta Vaughn as Helen Blake
• Gaston Glass as Robert McNeil Jr.
• Anders Randolf as Robert McNeil Sr.
• Paul Weigel as Jan Van Der Vetter
• Greta von Rue as Elsie Graham
• Nora Hayden as Martha Jenkins
• Charles Wellesley as Douglas Graham
• John H. Gardener as Elmer Price
• Robert Gordon as The Office Boy