You Are There At the Alamo

From 1947-1950 CBS broadcast on radio an educational show called You Are There which would be a newscast reporting on a historical event.  The series was revived for Television from 1953-1957 and briefly in 1971-72.  The video at the beginning of this post is from an episode of the 71-72 revival.  Walter Cronkite hosted the show in both the Fifties and the Seventies.