James Whale (22 July 1889 - 29 May 1957) was an English film director, theater director and actor. He is best remembered for his four classic horror films: Frankenstein (1931), The Old Dark House (1932), The Invisible Man (1933) and Bride of Frankenstein (1935). Whale also directed films in other genres, including what is considered the definitive film version of the musical Show Boat (1936). He became increasingly disenchanted with his association with horror, but many of his non-horror films have fallen into obscurity.

The success of the various productions of Journey's End brought Whale to the attention of movie producers. Coming at a time when motion pictures were making the transition from silent to talking, producers were interested in hiring actors and directors with experience with dialogue. Whale traveled to Hollywood in 1929 and signed a contract with Paramount Pictures. He was assigned as "dialogue director" for a film called The Love Doctor (1929). He completed work on the film in 15 days and his contract was allowed to expire. It was at around this time that he met David Lewis.  Whale was hired by independent film producer and aviation pioneer Howard Hughes, who planned to turn the previously silent Hughes production Hell's Angels (1930) into a talkie. Whale directed the dialogue sequences. When his work for Hughes was completed, he headed to Chicago to direct another production of Journey's End.  Having purchased the film rights to Journey's End, British producers Michael Balcon and Thomas Welsh agreed that Whale's experience directing the London and Broadway productions of the play made him the best choice to direct the film. The two partnered with a small American studio, Tiffany-Stahl, to shoot it in New York. Colin Clive reprised his role as Stanhope, and David Manners was cast as Raleigh. Filming got underway on 6 December 1929 and wrapped on 22 January 1930. Journey's End was released in Great Britain on 14 April and in the United States on 15 April. On both sides of the Atlantic the film was a tremendous critical and commercial success.

Using a quote from the above article, answer the following question: What type of film did he work on after Hell's Angels?
When his work for Hughes was completed, he headed to Chicago to direct another production of Journey's End.