ftp://ftp.yynet.tama.tokyo.jp/pub/misc/readline/old/  direct

[DIR]4.2/  direct  1530+ twin directories
[DIR]4.0/  direct  2569+ twin directories
[DIR]2.2_980513/  direct
[DIR]2.2_980421/  direct
[DIR]2.2.1_980724/  direct