ftp://ftp.cse.buffalo.edu/pub/FreeBSD-Archive/old-releases/i386/4.1-RELEASE/compat1x/  direct

321 B  2000-07-26CHECKSUM.MD5  800+ mirrors
235.00 KB  2000-07-26compat1x.ab  380+ mirrors
235.00 KB  2000-07-26compat1x.aa  380+ mirrors
98 B  2000-07-26compat1x.inf  200+ mirrors
52.38 KB  2000-07-26compat1x.ac  10 mirrors
3.48 KB  2000-07-26compat1x.mtree  6 mirrors
158 B  1998-09-21install.sh  1000+ mirrors