I found the following on Ancestry.com:
Name: Magdelena Wobken
Spouse Name: John Grossman
Marriage Date: 1868
Marriage Place: Manhattan, New York, New York
Marriage ID: 2220778893
Certificate Number: 2089
Other Comments: See Family History Library catalog for films 1543971-1562446 (Manhattan) and Film 1653852 (Brooklyn), for actual certificate.
Source: Marriage Registers, Extracts from Manhattan (1869-1880) and Brooklyn (1895-1897)
Publisher: Dept. of Health, Division of Vital Statistics, New York.
Publication Place: New York, NY