A Study in Black and White dates to at least 1897, when a variant was exhibited by Johnston in the (Linked Ring) Photographic Salon and reproduced the same year in the British journal Photograms of the Year:

Miss Francis Johnston (of Washington, U.S.A.) has captured British picture lovers this year. Her Study in Black and White (181), here reproduced, is perhaps the best record of a face seen through a veil which the camera has yet achieved.”  (1.)

1. excerpt: The Two Great Exhibitions: II.: The Photographic Salon: in: Photograms of the Year 1897: London: Dawbarn & Ward, Ltd.: pp. 107-08