[6] During the Spanish–American War, Lowenberg was the chair of the hospital commission of the American Red Cross, and a member of the executive committee of the ARC's San Francisco Chapter.

[7] Lowenberg was a member of the Local Section of the Home Advisory Board for the International Conference of Women Workers to Promote Permanent Peace (San Francisco, 1915).

During World War I, she served as Vice-regent of the California Preparedness Chapter of the Women's Naval Service, Inc. She was also a member of the State Commission on Marriage and Divorce,[1] and the Board of National Arbitration and Peace Committee.

Described as a novel for the 1920 United States presidential election, it revolves around a present-day Joan, not of Arc, but of one who listened to small voices within and became, in consequence, a leader in industrial and political happenings.

A university graduate, the heroine secured a position in an iron and steel plant and took part in the questions which arose there between capital and labor.

[12] "Equal rights to all — unions and non-unions, organized and unorganized labor", declares the heroine, her intelligence stimulated by the mystic voices that speak to her from out the impalpable air.

Two endowment funds at the San Francisco Nursery for Homeless Children, and many gifts to women's clubs and other charities, both public and private, were among her philanthropy.