Rupp is useful, but often wildly inaccurate. My immigrant ancestors arrived in 1741 and I have found their arrival in Rupp, and in Strassburger (as answered earlier by someone else). Strassburger also published facsimiles of the actual handwritten documents. My family name, Feÿ,, was apparently illegible to Rupp, who has one of them, the father, as "Huey", and his son as "Süs", whereas Strassburger has both correctly, and they are very clear on the facsimile. So, yes, make use of Rupp, but don't be overconfident of what he says.