Here is a page and some pictures from Arthur John Newmans book (1912) The tailed head-hunters of Nigeria; an account of an official’s seven years’ experience in the Northern Nigerian pagan belt, and a description of the manners, habits, and customs of some of its native tribes.
Its very interesting if only for historical interest and a look at perceptions of the time
The note at the bottom says … DUSKY BEAUTIES….. at least their own men think them so. The girl on the left, Isa was from Bornu, the other three were pagan slaves freed from Filiani owners at Ilorin. The broad Hausa hats worn by Nos.1 and 3 are a good protection against the sun. Three of these women are wearing English blouses in addition to their Hausa clothes
You can download the book here