"Lux Radio Theater" broadcast a 60 minute radio adaptation of the movie onMarch 13, 1950 with June Allyson, Margaret O'Brien, 'PeterLawford' and Janet Leigh reprising their film roles.

"The Screen Guild Theater" broadcast a 30 minute radio adaptation of the movie on December 22, 1949 with June Allyson and Peter Lawford reprising their film roles.

June Allyson was 32 when she played 15-year-old Jo March.

Peter Lawford and Janet Leigh narrated the trailer.

In the novel, Amy is the youngest sister, but in order to use 'Margaret O'Brien' as Beth, Beth was made the youngest.

In the scene where Beth (Margaret O'Brien) tells Jo (June Allyson) that she doesn't mind dying, June Allyson's tears were real. She was so moved by Margaret O'Brien's performance that she was sent home early, still crying, and had to pull over several times on her journey home as her tears rendered her unable to drive.

One of the three films June Allyson considered her personal favorites of her films.

The basket that 'Margaret O'Brien' carries around in this movie is the same basket that Judy Garland carried in The Wizard of Oz.

The snow in this movie was actually cornflakes.

This version originally was to be a David O. Selznick production. Filming began in September 1946 but David O. Selznick decided he couldn't tackle a major production so soon after the ordeal of filming Duel in the Sun so he sold the property and script to MGM. The cast for the David O. Selznick version included Jennifer Jones (Jo), Diana Lynn (Amy), Bambi Linn (Beth), Rhonda Fleming (Meg), John Dall (Laurie), Anne Revere (Marmee), Charles Coburn (Laurie's grandfather), Philip Friend (Brooke) and Constance Collier (Aunt March). Only director Mervyn LeRoy and Elizabeth Patterson (Hannah) made the transition to the MGM version. Costume tests of the actors exist.