IC 3158 is perhaps the star that I've flagged with a colon in the table, though there may well be a plate defect involved, too. Schwassmann's description reads "eF, cS, ??, alpha ::, delta ::". The double query means that Schwassmann was not sure of the object's reality. Combined with his uncertainty about the position, the fairly bright star is only a possibility.
Indeed, Wolfgang has taken another fainter star to the north as the IC object. This could be right, too.
Adelaide Ames and Dorothy Carlson have simply said that the object is a star, but we do not know which one they were looking at. It's a shame the original plate has gone missing.