Meet Elsie Cook. I wish there was something I could tell you about her. I assume that she is a performer of some kind. Most likely she is an actress that did not receive much acclaim as my initial research into her background found nothing. Perhaps a visitor to the Cabinet Card Gallery can provide us with some information about this pretty young woman. This vintage real photo postcard was published by Stewart & Woolf. The firm was located in London, England. The postcard is part of a series (115, no. 42). (SOLD)
THE CABINET CARD GALLERY 
She must have been known for her eyes, that is an uncommon pose. Very effective.