Vintage movies galore have arrived on DVD this week, led by a pair of Ann Sothern comedies from her RKO ingénue days in the 1930s. (All of these Warner Archive and Sony Choice Collection titles are available at warnerarchive.com.)“Smartest Girl in Town”/“She’s Got Everything” (Warner Archive/DVD, 1936/1937, b/w). Ann Sothern is perhaps best remembered for her 10 films in the 1940s “Maisie” franchise and her two hit TV sitcoms in the 1950s, “Private Secretary” and “The Ann Sothern Show.” But her bubbly personality and quick wit served her well in many memorable movies, from “A Letter to Three Wives” (1949) to “The Best Man” (1964) to “The Whales of August” (1987).Here, Sothern plays the female lead opposite Gene Raymond in two hourlong RKO comedy programmers.