Twin directories of acm-4.7:

[DIR]3  acm-4.7.tar.gz/acm-4.7/
[DIR]3  acm-5.0-10.alpha.rpm/acm-4.7/
[DIR]3  acm_4.7-6.deb/acm-4.7/
[DIR]  ftp://ftp.zenez.com/pub/SCO/Skunk2/CD-ROM/lib/acm-4.7/
[DIR]  ftp://ftp.zenez.com/pub/SCO/Skunk2/CD-ROM/src/Games/acm-4.7/
[DIR]  ftp://ftp.uni-duisburg.de/Games/acm-4.7/