Are the Soundex cards digitized and available on line from M327 Index To Passenger Lists Of Vessels Arriving At Baltimore (Federal Passenger Lists) 1820-1897?
NARA publication M327 is available online at FamilySearch here: Maryland, Baltimore Passenger Lists Index, 1820-1897
You can search by name or browse the digitized images (scroll down on that page for a link to the images).
For additional information about finding Baltimore passenger lists, see: Baltimore Passenger Lists Quick Guide 1820-1960s
Happy searching.
Regards,
Joe