1850 census, Exeter, Maine, sheet 126: Samuel Oak (33) with Lucinda (29) and a one-year-old son, at dwelling 145, family 152.
Image · dated 13 Aug 1850 · source: U.S. census microfilm (public domain)

How it is shown: Complete page as saved (the high-resolution copy); no crop, no retouch.
Keep in mind: Likely: the household reads 'Samuel Oak 33, Lucinda 29, Charles 1' (the first given name is hard to read) and fits Samuel Oak (b. about 1817), Lucinda (Allen) and Charles Ansel Oak (b. 1849). Relationships are not stated in 1850.