Could not find any files about the emigration of Fridolin Boesch from Lustenau. Try the books:
Filby P.William/Mary K. Meyer: Passenger and Immigration Lists. Index. 10 books, Detroit 1980-1900.
Glazier Ira A./P. William Filby: Germans to America. Lists of Passengers Arriving at U.S.Pots, 1850-1870, Willmington/DE 1988 ff. (this is not your time period, but maybe there are more books for the late 19th Cent.)
Fridolin was one of 16 children of Frdinand Boesch and Josefin Grabher. If you need more information let me know.