Seals wrote fiction, non-fiction, essays and plays. His other published works included the novel
Sweet Medicine, a sequel to
The Powwow Highway which
Booklist called "a comic masterpiece". In
Sweet Medicine, the story continues where
The Powwow Highway ended, but with the added device of the characters also commenting on the success of the previous book and film. In an ironic and self-deprecating incident, the protagonists have the chance to see the movie, but choose to see a Hollywood blockbuster instead. Later, they also encounter a
commune of
yuppie newagers, and are tempted with the promise of fame and money at the cost of choosing to sell out their vision.
The New York Times described the book as "full of adventure, humor, love and sex, and occasionally some eloquent rage about the way Indians have been treated in America." Seals' essays have appeared in
The Nation,
Los Angeles Times,
Newsday, and three scholarly anthologies. His family memoir is entitled
The Roswell Trilogy -
Abduction at Roswell,
Roswell Theogony, and
Confessions of the Gods. ==Activism==