Census Links is a growing catalog of links to transcriptions of census, tax lists, birth, death, marriage and military records, all freely available to help with your genealogy research.
1930 Census, Suffolk County, New York (Partial)
A List of the Inhabitants of the Town of Southampton Old and Young Christians and Heathen Freemen and Servants White and Black 1698 by Genealogy Quest.
From the UsGenWeb Census Project
A List of the Names of Old and Young, Christians, and Heathens, Freemen and Servants; White; and Black; etc. Inhabitting Within the Township of Southold, by Genealogy Quest.
Searchable database from the Suffolk County, New York GenWeb