Went to Amerika 12 July 1852.
Database: 
ancestry.com: New York City Directory, 1869
                      Combined Matches: 2 
Heinzman George, shoemkr. h 74 Thompson
Jacob Heitzman found in:
                                                     Family Archive #355 Germans to America, 1850-1874 
                                                               Age:  14     Gender:  Male     
                                                               Occupation:  Farmer     
                                                               Country:  Germany     
                                                               Final Destination:  United States     
                                                               Manifest ID Number:  00007803     
                                                               Ship's Name:  Richard Alsop     
                                                               Port of Embarkation:  Marseilles     
                                                               Date of Arrival:  Aug 27, 1852     
                                                               Captain's Name:  J. G. Smith     
                                                               Purpose for Travel:  Staying in the USA     
                                                               Mode of Travel:  Steerage