I periodically get email questions from people who have come to my site by searching Google for their ancestors and have found my genealogical records. (In fact, I’m currently working through a backlog of six questions, some of which have sat in my inbox for six months…the shame.) Anyway, in looking up some information about a distant cousin, I found out that there’s a regional repository of census microfilm in the Boston area at the Frederick C. Murphy Federal Center in Waltham. Since driving to Waltham is cheaper than paying $20 a month for access to the records, I may have to make a little field trip…