In the book The Egypt Game, who owns the A-Z store on Orchard Street?

When April
moves to the Casa Rosada to live with her grandmother, she takes an interest in a dusty curio
shop with a sign that says A - Z. The store is owned by a mysterious, taciturn man whom
residents of the area call the Professor. People in the community are skeptical and suspicious
of the Professor, partly because he is a man of few words who doesn't easily form relationships,
and partly because his...