• 25 Books

• 16 Holmes, Sherlock
• 11 Private investigators
• 4 Watson, John H. (Fictitious character)
• 2 Detective and mystery stories, Spanish
• 2 Dinosaurs
• 2 Holmes, Sherlock (Fictitious character)
• 2 Prehistoric peoples
• 1 Challenger, George Edward (Fictitious character)
• 1 Challenger, Professor (Fictitious character)
• 1 Detective and mystery stories
• 1 Detective and mystery stories, English
• 1 Dogs
• 1 Doyle, Arthur Conan, 1859-1930
• 1 Fantasy fiction, Spanish
• 1 History
• 1 Puritans
• 1 Scientific expeditions

• 15 Digitalia (Firm)
• 4 Appeceix, Silvana
• 4 Márquez de la Plata, Lucía
• 2 Ibeas Delgado, Juan Manuel
• 2 Izquierdo, Maritza
• 2 Pujals, María Engracia
• 1 Borreguero Sanchidrián, Sandra María
• 1 Dellepiane Rawson, Alicia
• 1 Díaz Gijón, José R. (José Ramón)
• 1 González Lejárraga, Antonio
• 1 Lázaro Ros, Amando
• 1 Matos, José (Translator)
• 1 Padrón Alfonso, Alexis
• 1 Pitz, Henry C. (Henry Clarence), 1895-1976
• 1 Rodríguez Felder, Luis Hernán
• 1 Sanchidrián Cid, Consuelo
• 1 Urceloy, Jesús

• 11 England
• 2 South America
• 1 Great Britain
• 1 Somerset (England)

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