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In page Lane Sisters:

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Before marrying, Cora Bell Hicks had been a reporter with a local newspaper in Macy, and had originally harbored acting ambitions herself, but was frustrated by the strict religious beliefs of her Methodist parents who frowned on any form of public entertainment. Cora Mullican encouraged her daughters to sing and play musical instruments. All the girls were fond of music, and at one time or another studied music in night classes at Simpson College in Indianola. Dorothy was already playing piano at age twelve for a silent screen movie house.