Among my parents' generation in our South Jersey neighborhood were the children and grandchildren of immigrants from southern Europe. I remember their stories of getting up before daylight to ride buses and trucks from Philadelphia across the Delaware to pick. I don't specifically recall cranberries but there were blueberries and lots and lots of tomatoes.

Trains of one or two or three carloads would haul the produce from the farms down the middle of Front Street in Camden to be unloaded at the Campbell Soup building, seen from the Philadelphia side of the Delaware River in this Shorpy image. Maybe cranberries took the same trip to be canned at the Campbell plant but I don't recall ever seeing a carload of cranberries on Front Street.

My grandfather was born in Philadelphia in 1920, and to this day, mentions his time spent working at Whites Bog as a child.