
If you feel you must spend time tracing your genetical roots (and I would advise caution at every step), then help is at hand for those who have been brought to the brink of bankruptcy by their endless quest for certificates, census images and shipping logs.
I have, alas, seen many families ruined by this same, insistent desire; children going shoeless to school merely because their mother felt the need to have 'just one more death certificate'.
Someone calling themselves Clear Digital Media have highlighted all the information on Ancestry.com that can be found free of charge.
I hesitate to encourage you - but if you are driven to spend your every free moment in the pursuit of dead relatives, you may well find some of them here.