
Rompers (комбинезоны) made from a 1960 sewing pattern would be passed down to younger siblings. Play clothes at this time could be gender neutral. An example from Hollywood is the young actress Mary Badham 
wearing overalls as Scout in the 1962 movie To Kill a Mockingbird. (если не знать, я бы подумал, что это мальчик)
Франклин Рузвельт (New York in 1884):
Мальчик викторианской эры (1870):
Брат и сестра (1905)


ссылки:
http://www.smithsonianmag.com/arts-cult
http://nyctaughtme.blogspot.com/201
http://thesocietypages.org/socimages/20