Were the books Toby Tyler and The Graveyard Book both made into films?    No
Toby Tyler Toby Tyler is a film produced by Walt Disney Productions and distributed by Buena Vista Distribution Company on January 21, 1960. It is based on the 1880 children's book "Toby Tyler, or Ten Weeks with a Circus" by James Otis Kaler.
Sliver (film) Sliver is a 1993 erotic thriller film based on the Ira Levin novel of the same name about the mysterious occurrences in a privately owned New York high-rise apartment building. Phillip Noyce directed the film, from a screenplay by Joe Eszterhas. Because of a major battle with the MPAA (which originally gave the film an NC-17 rating), the filmmakers were forced to make extensive reshoots before release. These reshoots actually necessitated changing the killer's identity. The film stars Sharon Stone, William Baldwin and Tom Berenger.