From the archives of the National Postal Museum comes this photo of a postal carrier 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.
A a Fifth Avenue Traffic Tower, one of seven put up in 1922 on the heavily traveled Fifth Avenue in NYC. The towers had electronically synchronized clocks on their north and south faces and 350 pound bronze bells which would toll the hours.