One of many on offer is this Canadian site:
Symbol of a Profession 100 years of Nurses Caps
This link led to more treasures to be explored at the Canadian Musuem of Civilization.
This first group was composed mainly of Rideau Hall staff and the Aberdeen's teenage daughter, Lady Marjorie Gordon. The group performed a boisterous "polska". One of the Vikings lost his helmet and it rolled to Lady Aberdeen's feet The Historical Fancy Dress Ball, OttawaDressing Up Canada. Late Victorian Fancy Dress Balls