With the permission of the Editors, the Medieval Sai Project: The
Greek Norwegian Archaeological Mission to Sudan is serializing online
the 22 issues of Nubian Letters (ISSN: 0921-8270
[www.worldcat.org] ) that came out between 1983
and 1994.

There is now a landing page for them at AWOL:
[ancientworldonline.blogspot.com].