The HathiTrust.org, is an online digital Library which has many texts provided by universities across the U.S.A, it's an astounding database, although I think you have to be at one of the partner universities to download books as PDF's, there are many books to read online using the page turner tool. Among translated Japanese texts that are availabe to view many are older texts that I presume are now, (due to their age), in the public domain, here's a list of some I recently found, hope these are of interest. On the HathiTrust Access and Use Policies page it mentions that, 'users are encouraged to cite and link to digital content and are free to do so without asking for permission', so I hope it's ok for me to provide these links.
A Handful of Sand
Translated by Sakanashi Shio
Art, Life, And Nature in Japan
An Adopted Husband/Sono Omokage
Translated by Buhachiro Mitsui and Gregg M.Sinclair
Paulownia Seven Stories from Contemporary Japanese Writers
Translated by Toraro Taketomo, foreward by John Erskine,Phd.
Translated by Edwin McCellan