How do I find an old Perl module on CPAN?

I am running old CGIs on a new box. I use the module
Convert::ASCII::String, which no longer appears on CPAN searches.

In the past, I was able to find an old module (Tools::SQL) because I
was able to determine the author's name (Kane) and found it on
backpan.perl.org. But this time, I have no knowledge of the module
except its name - I do not know the author's name (and have no readily
available means to find it). backpan seems to support only searches
by author name, not module name.

Thanks!

--
Sad news about Tad - condolences to his family and friends. He will
be missed on this newsgroup, and by me.
.