The Internet Archive (IA) is a nonprofit organization dedicated to building and maintaining a free and openly accessible online digital library. This library includes texts, audio, moving images, and software as well as archived web pages.
I have searched the archive for Hausa documents and found – among other materials – the following documents:
- Hausa proverbs – Merrick, George Charleton, 1872-1913
- Magana Hausa. Hausa stories and fables – Schön, James Frederick, 1803-1889
- Specimens of Hausa literature – Robinson, Charles H. (Charles Henry), 1861-1925
- Hausa superstitions and customs; an introduction to the folk-lore and the folk – Tremearne, A. J. N. (Arthur John Newman), 1877-1915
- Hausa folk-lore, customs, proverbs, etc. : collected and transliterated with English translation and notes (Volume 1) – Rattray, R. S. (Robert Sutherland), 1881-1938
- Hausa folk-lore, customs, proverbs, etc. : collected and transliterated with English translation and notes (Volume 2) – Rattray, R. S. (Robert Sutherland), 1881-1938
As far as I know, these texts are now in the public domain, i.e. their copyright has expired because the author of the texts has died more than 70 years ago.
All these materials can be downloaded. They are mostly PDF files containing the images of scanned pages which have then been converted to text using optical character recognition. Of course, during this process many mistakes can happen, but the texts can still be used for further study and processing.
I am planning to edit some of the old Hausa texts and publish them on this blog, so be on the lookout!