How many movies have Gladys Field and John B. O'Brien collaborated on?

They have worked on 9 movies together! Their first movie together was The Cowpuncher's Ward (1910) and was their highest rated movie together. They have not worked together since Spike Shannon's Last Fight (1911). They are most known for their western films together.

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Jennie Lee
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The Cowboy's Friend
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Gladys - the Ranchman's Daughter
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The Cowpuncher's Ward, as an Adult
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