1939 saw the release of the Young Mr. Lincoln film, the thirtieth year of the Lincoln penny, and the publication of Abraham Lincoln, The War Years a four-volume set.
Film: “Young Mr. Lincoln is a 1939 partly fictionalized biopic about the early life of President Abraham Lincoln, directed by John Ford and starring Henry Fonda… Screenwriter Lamar Trotti was nominated for an Academy Award for Best Writing/Original Story.” https://en.wikipedia.org/wiki/Young_Mr._Lincoln
Coin: “The Lincoln cent is issued [in 1909], featuring Abraham Lincoln in profile, to honor the 100th anniversary of his birth. It is the first circulating coin to show a real person, and a President of the United States.” https://www.usmint.gov/education/historianscorner/index03f1.html?action=timeline¢ury=190 The “S” on the penny shown indicates that it was minted in San Francisco (not quite southern California but the coins would have been commonly seen here).
Book: From a 2012 review that compares it to a 1939 review: “I have mentioned previously that Sandburg’s biography of Abraham Lincoln is still a classic and should be read by all who have any interest in Lincoln-whether scholar or casual reader. That was true in 1939 and still so today.” http://abesblogcabin.org/partial-comments-from-a-1939-review-of-abraham-lincoln-the-war-years-by-carl-sandburg