Added another new article, Females in Trombone History, 1500-1900, to HubPages. Lots of interesting info and images. You can find it here.

Along similar lines, I also added the following to the 19th century (2nd half) of the Trombone History Timeline:

1873—Leipzig, Germany: The Women’s Orchestra of Frau Amann-Weinlich, A woodcut after a drawing by Vincent Katzler, includes a female trombonist as part of a depiction of an all-female orchestra. The trombonist is situated in the upper-left (see below image; public domain) (Musikgeschichte in Bildern: Konzert 159).