+Subdirectories
+--------------
+SRI-NOSC/ was downloaded from from Warren Toomey's minnie.tuhs.org using:
+ rsync -avz minnie.tuhs.org::UA_Distributions/Early_Networking/NOSC/ NOSC
+ tar xzBpf NOSC/nosc.tar.gz ./mh
+ cp -p NOSC/nosc.txt mh
+ chmod -R go+r mh
+ chmod go+x mh mh/subs.dir
+ find mh -name '*.[ao]' -execdir /bin/rm {} \;
+
+2.9BSD/ was downloaded from from Warren Toomey's minnie.tuhs.org using:
+ rsync -avz minnie.tuhs.org::UA_Distributions/UCB/2.9BSD/ 2.9BSD
+ tar xzBpf usr.tar.gz ./contrib/mh
+ chmod g-w contrib/mh/Makefile
+
+mh-jun-1982/ was downloaded from
+http://bitsavers.trailing-edge.com/bits/Rand/Rand_Software_Distribution_1.7_May82.zip
+
+mh-nov-1983/ was downloaded from
+http://www.tuhs.org/Archive/Distributions/UCB/4.2BSD/new.tar.gz
+
+Other versions of MH are, as of May 2019, available at these locations:
+mh-6.4 http://www.tuhs.org/Archive/Distributions/UCB/4.3BSD/new.tar.gz
+mh-6.5/ http://www.maths.tcd.ie/~dwmalone/tcdmh-6.5.tar.gz
+mh-6.5-4.3BSD-Tahoe http://www.tuhs.org/Archive/Distributions/UCB/4.3BSD-Tahoe/new.tar.gz
+mh-6.5-4.3BSD-Reno http://www.tuhs.org/Archive/Distributions/UCB/4.3BSD-Reno/contrib.tar.gz
+mh-6.6/ http://www.maths.tcd.ie/~dwmalone/tcdmh-6.6.tar.gz
+mh-6.8 https://stuff.mit.edu/afs/athena/astaff/source/src-7.7/third/supported/mh.6.8/
+mh-6.8.3/ http://www.maths.tcd.ie/~dwmalone/tcdmh-6.8.3.tar.gz
+
+mh-6.8.5/ contains the entire MH 6.8.5 sources and RCS files, and was
+downloaded from
+http://iweb.dl.sourceforge.net/project/rand-mh/MH/6.8.5/mh-6.8.5.tgz
+Some obviously unnecessary files were removed. mh.rf and mh.me were
+renamed to mh-intro.rf and mh-intro.me, respectively, to avoid name
+clashes with other files on case-insensitive file systems.
+
+
+Other repositories
+------------------
+MH source code, versions 5 through 6.8.5, is archived under
+http://sourceforge.net/projects/rand-mh/files/
+That repository contains other useful MH artifacts including
+the Jerry Peek's MH Book and mailing list archives.
+
+
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