"Quincentennial Fever" by James N. Baker in Newsweek (Special Issue, Fall/Winter 1991, pp. 79-80) Every American will have to decide how to mark the 500th anniversary of Columbus's first voyage. Maybe you can't drop in on the World's Fair in Seville, Spain. But at the "Seeds of Change" exhibition at the Smithsonian's Natural History Museum in Washington, you can explore much of what you've read about here. In addition, Columbus, Ohio, is turning itself into a giant Rose Bowl float, and Philadelphia plans a yearlong binge of celebration. Other commemorations, like the Choctaw Trail of Tears, are more solemn. A calendar to help you choose: October 1991 'Seeds of Change' Washington, D.C. Not counting the World's Fair or the Barcelona Olympics, this prodigious exhibition is Columbiana's top ticket. At the Smithsonian's National Museum of Natural History, visitors will enter through a massive Spanish-style portal made of 14,000 ears of corn. Inside, covering 14,000 square feet, they'll find artifacts, multimedia displays and dioramas. The Smithsonian spent more than $2.5 million to tell the history of five "seeds"--sugar, corn, the potato, disease and the horse--that indelibly changed the New World and the Old. Elsewhere, six museums and parks will offer collaborative shows: American Quarter Horse Heritage Center & Museum in Amarillo, Texas; the Brevard Museum in Cocoa, Fla.; Atlanta's Fernbank Museum of Natural History; San Antonio, Texas's Witte Museum, and Faust County Park in Chesterfield, Mo. October 26 to April 1, 1993 'Neighbors in the New World' Philadelphia. No major American city is going to go quite as wild as Philadelphia, which plans a yearlong celebration of events--a stream of parades, fireworks displays, exhibits, jazz concerts, marathons and ethnic food fairs. Other events include a Beaux Arts Ball for the studs-and-cummerbund set and a "Yo, Philadelphia!" street festival if your taste runs to T-shirts and Reeboks. Through October 1992 'A Day in the Life of Native America' More than 30 Indian photographers from the United States and Canada will start spending a year on various reservations, snapping away. They plan to exhibit their work in New York City in 1993. '... And Then Columbus' New York City. The Caribbean Cultural Center plans a month-long series of theatrical events, forums and art exhibitions to illuminate the pre-Columbian cultures of indigenous Americans and Africans. 'Circa 1492' Washington. The National Gallery of Art will mount one of its most ambitious shows ever. Subtitled "Art in the Age of Exploration," the show will include more than 600 paintings, sculptures, drawings and decorative objects. Through January 12, 1992 November 1991 'Imagining the New World' New York City. The New York Historical Society will unveil an exhibit of paintings, drawings, maps and prints, culled largely from European libraries and museums, that show how the Old World visualized the New. November 13 to January 26, 1992 March 1992 'The Year of Columbus' New York City. The Intrepid Sea Air Space Museum is planning a yearlong series of dramatic exhibitions, naval-ship visits and special events in order to tell the story of the early explorations of Columbus and other voyagers. Through March 1993 April 1992 'AmeriFlora '92' Columbus, Ohio. The international floral and garden exposition is the first of its kind in the United States and a centerpiece of the U.S. Jubilee Commission's festivities. A $53 million enterprise, AmeriFlora will feature outdoor performances, exhibits and 88 acres of gardens. Have the killer bees gotten wind of this? April 20 to October 12, 1992 'A Prayer of Thanksgiving' Organized by the Quincentennial Foundation of Istanbul, synagogues around the world will offer a special prayer of Thanksgiving on Shabbat Hagadol, the Sabbath before Passover. The services will mark the 500th anniversary of another departure from Spain: the expulsion of an estimated 100,000 Sephardic Jews. April 11 'Choctaw Trail of Tears Memorial Walk' Mississippi to Oklahoma. The Choctaw Nation of Oklahoma plans to retrace the 500-mile route taken when the group was forced to leave its homeland in Mississippi and resettle in Oklahoma in the 1830s. Even the Irish are taking part in this one. The Choctaw Nation raised $710 back in 1847 to aid victims of Ireland's potato famine; now some Hibernians will walk with the Choctaws to celebrate their survival. Spring 1992 May 1992 'Cristoforo Colombo: Ships and the Sea' Genoa, Italy. In Columbus's supposed hometown, an exposition on the development of navigation from the 15th century to the present. As part of the city's celebration, Genoan Nino Grimaldo, 52, is coming to America--paddling a kayak. May 15 to August 15 'Peace and Dignity Journeys' Two teams of relay runners--one leaving from Alaska, the other from Argentina--will race with the goal of meeting in Mexico City by October 12. Their purpose: to celebrate 500 years of survival by indigenous Americans. June 1992 'Discovering America' Near Williamsburg, Va. Historic Jamestown Settlement will open an exhibit exploring many "discoverers" of America, from the Paleo Indians who crossed the Bering Strait to the ancient Phoenicians to the British. Through March 1993 September 1992 'Music of the Americas' Organized by the Santa Fe Chamber Music Festival, ensembles from Brazil, Venezuela, Bolivia, Mexico, Puerto Rico and the United States will tour 10 U.S. cities. Through October October 1992 'Christopher Columbus, The Film' Seville. The gala opening of British director Ridley Scott's film about the explorer, played by Gerard Depardieu. (Meanwhile, back in Hollywood, producers are scrambling to get Mario Puzo's version onto the screen. Slated to play the title role is Timothy Dalton, a.k.a. James Bond.) October 1 'The International Indian Treaty Council Protest' San Francisco. The treaty council, an arm of the American Indian Movement, plans to stage various protest demonstrations, including mock trials of Columbus and the Spanish explorers Cortes and de Soto. October 9-12 December 1992 'The Columbus Grove' Baiona and Pontevedra, Spain. Together, a group of American and Spanish schoolchildren will plant 550 redwood seedlings, a gift from the New World to the Old. December 14-15 June 1993 'Expo/Feria Puerto Rico' San Juan, Puerto Rico. The city will open a cultural and commercial fair to commemorate Columbus's landing on Puerto Rico as part of his second voyage in 1493. Through December