Here's a smattering of books about Madagascar that I lifted from the State Department website.
Attenborough, David, Zoo Quest to Madagascar, Lutterworth Press, London, 1961.
Astuti, Rita,People of the Sea: Identity and Descent among the Vezo of Madagascar (Cambridge Studies in Social and Cultural Anthropology), Cambridge University Press, Cambridge, 2003.
Bloch, Maurice, Placing the Dead: Tombs, Ancestral Villages, and Kinship Organization in Madagascar, Seminar Press, New York, 1971.
Bourgeacq, Jacques, and Liliane Ramarosoa, Voices from Madagascar: An Anthology of Contemporary Francophone Literature, Ohio University Press, Athens, 2002.
Bradt, Hilary, Madagascar The Bradt Travel Guide - 7th ed., Globe Pequot Press, 2002.
Cole, Jennifer, Forget Colonialism? Sacrifice and the Art of Memory in Madagascar, University of California Press, Berkeley, 2001.
Dahl, Oyvind and Yvind Dahl, Meanings in Madagascar: Cases of Intercultural Communication, Bergin & Garvey, 1999.
Durrell, Gerald, The Aye-Aye and I: A Rescue Mission in Madagascar, Arcade, New York, 1993.
Ellis, Stephen, The Rising of the Red Shawls: A Revolt in Madagascar, 1895-1899, Cambridge University Press, Cambridge, 1985.
Evers, Sandra, and Marc Spindler, ed. Cultures of Madagascar: Ebb and Flow of Influences, Leiden, Netherlands, 1995.
Fitzpatrick, Mary, and Paul Greenaway, Lonely Planet Madagascar - 4th ed., 2001.
Garbutt, Nick, Mammals of Madagascar, Pica Press, 1999.
Goodman, Steven M. and Bruce D. Patterson, ed. Natural Change and Human Impact in Madagascar, Smithsonian Institution Press, Washington and London, 1997.
Goodman, Steven M. et al, ed. The Natural History of Madagascar, University of Chicago Press, (Jan. 2004).
Gow, Bonar, Madagascar and the Protestant Impact: The Work of the British Missions, 1818-1895, New York, 1979.
Jolly, Alison, A World Like Our Own: Man and Nature in Madagascar, Yale University Press, New Haven, 1980.
Kreamer, Christine Mulle, and Sarah Fee, Objects as Envoys: Cloth, Imagery, and Diplomacy in Madagascar, Smithsonian Institution, 2002.
Langrand, Olivier, Guide to the Birds of Madagascar, Yale University Press, New Haven, 1990.
Lanting. Frans, Madagascar: A World Out of Time, Aperture, New York, 1990.
Larson, Pier M., History and Memory in the Age of Enslavement: Becoming Merina in Highland Madagascar, 1770-1822, Heinemann, 2000.
Mack, John, Madagascar: Island of Ancestors, British Museum, London, 1986.
Mack, John, Malagasy Textiles, Shire Publications, 1989.
Mannoni, Octave, Prospero and Caliban: The Psychology of Colonization, Praeger, New York, 1956.
Mittermaier, Russell, et al. Lemurs of Madagascar, Conservation International, 1994.
Murphy, Dervla, Muddling Through in Madagascar, Overlook Press, 1985.
Tyson, Peter, The Eighth Continent: Life, Death and Discovery in the Lost World of Madagascar, Harper Collins, New York, 2000.
French
Acquier, Jean-Louis, Architecture de Madagascar, Arthaud, Paris, 1997.
La Cité des Mille: Antananarivo: Histoire, Architecture, Urbanisme, CITE/Tsipika, Antananarivo, 1998.
Cauvin, Patrick, Villa Vanille, Albin Michel, 1997.
De Flacourt, Etienne (annotated by Claude Alibert), Histoire de la Grande Ile Madagascar, Karthala, Paris, 1995.
Gallieni, Joseph, Neuf Ans à Madagascar, Hachette, Paris, 1908.
Guide Bleu Evasion, Madagascar, Hachette, Paris, 2001.
Guide Gallimard, Madagascar, 1999.
Randrianary, Victor, Madagascar: Les Chants d'une Ile, Cité de la Musique/Actes Sud, 2001.
Revel, Eric, Madagascar, L'Ile Rouge, Ballard, 1994.
Tronchon, Jacques, L'Insurrection Malgache de 1947, Karthala, Paris, 1987.
Verin, Pierre, Madagascar, Karthala, Paris, 1990.