Added 2 images to Album 4 of the Slideshow.
BT's hearing impairment was probably instrumental in her choice of photography as a career. However, later in life, after leaving photography and Chicago for life back in Winneconne, Wisconsin, she became a dealer for the then state-of-the-art hearing aid, the Lieber Oscillator, made by Sonotone Corporation.
“Two Women Picture-Makers: They Represented American Women in Artistic Photography at Paris
The work of American women in artistic photography has been represented at Paris by two delegates, both of whom are ably fitted by reason of talent and artistic achievement, to speak for the feminine exponents of the profession. Miss Beatrice Tonnesen read a paper before the International Congress of Photography at the Paris Exposition. Miss Tonnesen is a Western girl, coming originally from Oshkosh, Wisconsin. Her professional career is, however, identified with Chicago, and from a provincial girl, equipped with the foundation of a thorough technical knowledge of photography, she has become a well known business woman of the metropolis of the West, with a thorough understanding of photography as a fine art.”
At the website Seven Roads, I found the trade label for Osgood & Co., one of the original purchasers of at least some of the Beatrice Tonnesen images. I have found this copyright on a couple of the newspaper inserts. A Google search provided no additional information on the company. Not a particularly creative label, is it.