All 50 volumes, plus special editions, of "Potter Profiles"
are available in PDF format at http://archives.genealogytoday.com/search/Potter_Profiles_%2...
or, because of possible changing URLs,
go to http://genealogytoday.com/
then Search For Resources: Potter Profiles
There is also a "Potter Profiles" bloghttp://potterprofiles.blogspot.com/
who I presume might be Donna Potter Phillips,
the editor of the original paper version of Potter Profiles.