Michael,
     SD-NH2 is in fact a second isolate of SD-NH collected by Hiraizumi and
Nakazima at the same time as their 1965 DIS note.  I got it from the Crow lab
donkey's years ago.  SD-79 is the same structural SD chromosome as SD5 and
SD36, collected from nature (Jim Crow's back yard) in 1979, whence its name.
It is an independent isolate, but since it carries the SD5 inversions, maybe
the best way to crosslist it in the RedBook is to refer to SD5 or SD36.
     Cheers,
        Terry