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[Gertrude Mercer Hubbard Grossman, Roberta Wolcott Hubbard Bell, and Mabel Hubbard Bell as girls]
- "Portrait photographs"
- "Group portraits"
- "Daguerreotypes"
- "[Gertrude Mercer Hubbard Grossman, Roberta Wolcott Hubbard Bell, and Mabel Hubbard Bell as girls]"