ftp://82.96.64.7/pub/linux/kernel/people/akpm/patches/2.6/2.6.15/  direct

[DIR]2.6.15-mm4/  direct  309+ twin directories
[DIR]2.6.15-mm3/  direct  312+ twin directories
[DIR]2.6.15-mm2/  direct  160 twin directories
[DIR]2.6.15-mm1/  direct  157 twin directories