
"Miss Twombly, whip of Ladies' Coach Run, and two other ladies beside coach on street." April 26, 1909. View full size. George Grantham Bain Collection.
Very long hat pins were used to hold those hats to buns of hair underneath.
http://www.gjhistory.org/pix/images/gracemillerS.jpg
According to a knowledgeable friend, Barry Dickinson, this is Ruth Twombly, daughter of Florence Vanderbilt (Alfred Vanderbilt's sister). He says that she was the last of the family to die, in the early 1950's in Paris. They owned the Florham estate in NJ, where they raised Hackney horses. Ruth was a member of the ladies Four-in-hand club and Belle Beach was her teacher. He also says that they used scarfs to hold the hats on, especially on ships.
Interesting last name, there's a Twombly Rd in NW ILL just south of Rockford, I wonder if they could be related? I'd like to see what happened on windy days.
Women favored wide-brimmed hats and bonnets to keep the sun off their face.