Porgy
Dorothy Heyward adapted her husband's novel for the stage without telling him until it was done, and they then finished it together. The Theatre Guild production ran in 1927. The opera follows the play's scene structure rather than the novel's narrative.
Operas drawn from this source
- Porgy and Bess — the 1927 stage adaptation by DuBose and Dorothy Heyward, which supplied the dramatic structure