ftp://ftp.cse.buffalo.edu/pub/FreeBSD-Archive/old-releases/i386/4.7-RELEASE/compat21/  direct

268 B  2002-10-07CHECKSUM.MD5  1000+ mirrors
252 B  2002-08-07install.sh  1000+ mirrors
235.00 KB  2002-10-07compat21.aa  360+ mirrors
69 B  2002-10-07compat21.inf  129 mirrors
203.46 KB  2002-10-07compat21.ab  10 mirrors
1.37 KB  2002-10-07compat21.mtree  48 mirrors