Probably as a promotion for the fact that the 1940 Census will be released to the public in April, Ancestry.com is offering free online access to the 1930 census this weekend (Feb. 18-190 at this link: http://search.ancestry.com/search/db.aspx?dbid=6224&o_iid=50353&o_lid=50353&o_sch=Web+Property.
Filed under: Resources Tagged: | 1930 Census Free Search

Note that the index (without images) to the 1930 Census is always available free and without registration at FamilySearch.org. (The earlier census records there include images.) http://goo.gl/PHTru