Actress Mildred Davis with her pet dog,  12 August 1921.
Source: Library of Congress

Actress Mildred Davis with her pet dog, 12 August 1921.

Source: Library of Congress

New York City school children on the first day of school, 1915.
Source: Library of Congress, George Grantham Bain Collection

New York City school children on the first day of school, 1915.

Source: Library of Congress, George Grantham Bain Collection

Fred and Adele Astaire, ca. 1906.

Fred and Adele Astaire, ca. 1906.

Jacob Riis, Sister Irene and children at New York Foundling orphanage, New York City, 1888.
Source: Library of Congress

Jacob Riis, Sister Irene and children at New York Foundling orphanage, New York City, 1888.

Source: Library of Congress

Portrait of a Father and Smiling Child, USA, ca. 1855.
Source: Getty Museum

Portrait of a Father and Smiling Child, USA, ca. 1855.

Source: Getty Museum

Nurse and Child, USA, ca. 1850.
Source: Getty Museum

Nurse and Child, USA, ca. 1850.

Source: Getty Museum

Dr. Hermann Carl Eduard Biewend, Artist’s Wife and Their Three Children, Germany, June 1851.
Source: Getty Museum

Dr. Hermann Carl Eduard Biewend, Artist’s Wife and Their Three Children, Germany, June 1851.

Source: Getty Museum

Dog Sitting on a Table, USA, ca. 1854.
Source: Getty Museum

Dog Sitting on a Table, USA, ca. 1854.

Source: Getty Museum

Ernest Hemingway as a baby, 1900.

Ernest Hemingway as a baby, 1900.

Jack Pickford and Marilyn Miller with their dogs, 1922-1927.
Source: Library of Congress, George Grantham Bain Collection

Jack Pickford and Marilyn Miller with their dogs, 1922-1927.

Source: Library of Congress, George Grantham Bain Collection