The association "CompGen - Verein für Computergenealogie" has kindly made the address books of the Hanseatic City of Lübeck from 1798, 1933 and 1939 as well as the address book for Schleswig-Holstein from 1869 (extracts) freely available. Here you can now search for your ancestors.
At least one of the three fields must be filled in. The two additional fields search the columns First name, Street, City, Occupation, Company and Other, but not the Last name column.