A few nice Children images I found:
children at Nizwa
Image by sophie.z.j.
children at Nizwa
Children Walking on Trail
Image by vastateparksstaff
Children walking on trail at Pocahontas State Park
Uniformed Letter Carrier with Child in Mailbag
Image by Smithsonian Institution
Description: This city letter carrier posed for a humorous photograph with a young boy in his mailbag. After parcel post service was introduced in 1913, at least two children were sent by the service. With stamps attached to their clothing, the children rode with railway and city carriers to their destination. The Postmaster General quickly issued a regulation forbidding the sending of children in the mail after hearing of those examples.
Creator/Photographer: Unidentified photographer
Medium: Black and white photographic print
Culture: American
Geography: USA
Date: 1900
Collection: U.S. Postal Employees
Persistent URL: http://photography.si.edu/SearchImage.aspx?t=5&id=2001&q=A.2006-22
Repository: National Postal Museum
Accession number: A.2006-22
Tags: Children, Nizwa