An eleven-year-old boy who attends the University School in Hyde Park near Chicago.
A quirky eleven-year-old who is smart and has a way with words that is unusual for a child her age.
Ms. Isabel Hussey
Calder and Petra's very liberal teacher. .
Calder's best friend whose mother and stepfather move him to New York.
The owner of Powell's Bookstore and the recipient of one of the three letters.
Frank and Norma Andalee
Walter and Yvette Pillay
Calder's very attentive parents.
The author of Lo!
The woman in some paintings by Johannes Vermeer.
Mrs. Louise Coffin Sharpe
The somewhat unfriendly old woman who lives near Calder and Petra.
A boy who is in Tommy's class in New York who they all believe has disappeared.
The artist who painted "The Lady Writing".
Art Scholar/Thief/Fred Steadman/Xavier Glitts/Glitterman
This section contains 213 words
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