This is the archives for the city of Rochester and they have the original marriage records for 1876 - 1967. These records are indexed 1876 - 1907 and may be searched in person. They also have a collection of Rochester City directories and the government records for the city. They would like to have you call for an appointment. They have deeds, mortgages, naturalization records, and divorce judgements.
Most original records are now off-site.
Microfilms of deeds and mortgages are available. Naturalization records can be obtained usually a small period of time.