The House with a Clock in its Walls (1973) 1973 - American Library Association (ALA) Children's Books of International Interest Award 1973 - New York Times Outstanding Books of 1973 Award 1978-79 - South Carolina Children's Book Award Nominee 1980 - Michigan Young Readers Award Nominee 1982 - Maude Hart Lovelace Award Nominee (Minnesota) American Library Association preliminary Newbery list The New York Times Ten Best Books of the Year

The Figure in the Shadows (1975) 1975 - Classroom Choices 1975 - Child Study Association Children’s Books of the Year 1975 - The New York Times Outstanding Books

The Letter, the Witch, and the Ring (1976) 1977 - Classroom Choices 1979-1980 - South Carolina Children's Book Award Nominee 1981 - Utah Children's Fiction Book Award

The Treasure of Alpheus Winterborn (1978) 1983 - Maude Hart Lovelace Award Nominee (Minnesota)

The Curse of the Blue Figurine (1983) 1983 - American Bookseller Pick of the Lists 1985 - Utah Children's Fiction Book Award Nominee 1986 - Indian Paintbrush Book Award Nominee (Wyoming) 1986-87 - Virginia Young Readers Award, Middle School Division 1990-91 - Read-Aloud Books Too Good to Miss List (Indiana Library Federation)

The Mummy, the Will, and the Crypt (1983) 1983 - School Library Journal Best Books of the Year 1985-1986 - Iowa Teen Award Nominee 1986 - Kentucky Bluegrass Award Nominee

The Dark Secret of Weatherend (1984) 1987 - Utah Children's Fiction Book Award Nominee

The Spell of the Sorcerer's Skull (1984) 1985 - American Bookseller Pick of the Lists

The Eyes of the Killer Robot (1986) 1991 - Rebecca Caudill Young Readers Book Award Nominee (Illinois)

The Lamp from the Warlock's Tomb (1988) 1989 - Edgar Allen Poe Award, Best Juvenile Division, Nominee

The Trolley to Yesterday (1989) American Bookseller Pick of the Lists

The Ghost in the Mirror (1993) American Bookseller Pick of the Lists

The Specter From the Magician's Museum (1998) 1998 - Georgia Author of the Year Award, Young Adult Division New York Public Library "Best Books for the Teen Age" Awards