The first production from Frontier Films, the film production collective that was the successor to NYKino and the Workers Film and Photo League, Heart of Spain focuses on the Spanish Civil War, a conflict that became a touchstone of its era and was the most forceful opposition to the rising threat of fascism in Europe. Heart of Spain was begun by Geza Karpathi and Herbert Kline, who ultimately turned their footage over to Paul Strand, Leo Hurwitz, and Ben Maddow to make the film. It is compelling both for its shrewd formal aesthetics and as a sympathetic human document of the war.

In this propaganda film intended to raise money for republicans fighting in the Spanish Civil War, Henri Cartier-Bresson first presents the achievements of the Spanish Republic in the field of public health. He then shows how members of the public and organizations across the world were supporting the fighters.

The Challenge... A Tribute to Modern Art is a 1974 American documentary film directed by Herbert Kline. The film shows footage of great modern artists in their studios creating and commenting on their work, with narration and commentary by Orson Welles. It was nominated for an Academy Award for Best Documentary Feature.

During World War II, a young boy and girl, living with their respective families in an apartment house that had restrictions against pets, adopt a lost dog and hide it in a vacant apartment, which may have been the only vacant apartment in the United States at the time this movie was being filmed. A burglar breaks in and the apartment is damaged when the dog and crook have a tussle. This blows the dog's cover, but the kids enlist him in the K-9 Corps, and the dog distinguishes himself in the WWII Italian campaign

1971 film

Teen baseball fan Johnny Barrows sneaks into the baseball stadium of the Cleveland Indians, then playing in the 1948 World Series; claiming to be an orphan, he befriends team members & broadcaster Mike Jackson. But it develops that Johnny has a troubled home life with his mother and stepfather, and is involved in juvenile crime. His 'better side' shows only when he runs away to visit the team again. Can Mike and the Indians wrest Johnny away from bad influences?