Complete the following sentence: The Montalba sisters were regular contributors to the Royal Academy Summer Exhibition during the 1870s. ️<unk>️<unk>️<unk> ️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️ Clara Montalba exhibited her work at the Palace of Fine Arts and
The Woman's Building at the 1893 World's Columbian Exposition in Chicago, Illinois.