According to the 24 Jun 1916 Motion Picture News, set builders were constructing a throne-room set at the studios of Popular Plays and Players, Inc., until general manager Robert North realized that it would be less expensive to rent the Green Room of the McAlpin Hotel in New York City. Described as “one of the most decorative private banquet rooms in the country,” the Green Room featured three chandeliers and a collection of fine art dating back to the eighteenth century. The Dec 1916 Photoplay identified another New York City location as the National Democratic Club at the corner of Fifth Avenue and Fiftieth Street. The building was reportedly popular with filmmakers because traffic tended to be lighter in that area than in other parts of the city. An item in the 8 Jul 1916 Moving Picture World noted that principal photography had been delayed by rainy weather, but was finally completed. The 21 Oct 1916 Motion Picture News listed Lorna Volare among the cast.
       The Eternal Question opened on 3 Jul 1916. Although reviews in the 30 Jun 1916 Var and 15 Jul 1916 Moving Picture World were fairly positive, the former was based on a rough edit of the film, while the latter was based on an incomplete version.
       Various sources listed Harry Revier as the co-director, while others credited him as technical supervisor. Var claimed that "Burton L. King directed the picture under the supervision of Harry Revier." ...