27．The first Automatic Pop－up toaster was marketed in June 1926by McGraw Electric Co．in Minneapolis under the name Toastmaster．The retail price was 13．50．
28．On September 2，1952，a 5year old girl was the first patient to under go a heart operation in which the deep freezing technique was employed．Her body temperature，except for her head，was reduced to 79degrees Fahrenheit．Dr．Floyd Lewis at the Medical School of the University of Minnesota performed the operation．
29．The first Aerial Ferry was put into Operation on April 9，1905，over the ship canal between Duluth to Minnesota Point．It had room enough to accommodate（容纳）6automobiles．Round trip took 10min．
30．Rollerblades were the first commercially successful in－line Roller Skates．Minnesota students Scott and Brennan Olson invented them in 1980，when they were looking for a way to practice Hockey during the off－season．Their design was an ice hockey（曲棍球）boot with 3inline wheels instead of a blade（击球板）．
31．The first Intercollegiate（学院间的）Basketball game was played in Minnesota on February 9，1895．
32．In 1919a Minneapolis factory turned out the nations first armored（装甲的）cars．
33．Tonka Trucks were developed and are continued to be manufactured in Minnetonka．
34．Hormel Company of Austin marketed the first canned ham in 1926．Hormel introduced Spam in 1937．
35．Introduced in August 1963，The Control Data 6600，designed by Control Data Corp．of Chippewa Falls，was the first Super Computer．It was used by the military to simulate nuclear explosions and break Soviet codes．These computers also were used to model complex phenomena（现象）such as hurricanes and galaxies（星系，银河）．
36．Candy maker Frank C．Mars of Minnesota introduced the Milky Way candy bar in 1923．Mars marketed the Snickers bar in 1930and introduced the 5cent Three Musketeers bar in 1937．The original 3Musketeers bar contained 3bars in one wrapper．Each with different flavor nougat（奶油杏仁糖）．
37．A Jehovah’s Witness was the first patient to receive a transfusion（［医］输血，输液）of artificial blood in 1979at the University of Minnesota Hospital．He had refused a transfusion of real blood because of his religious beliefs．
38．Minnesota has one recreational boat per every six people，more than any other state．
39．There are 201Mud Lakes，154Long Lakes，and 123Rice Lakes commonly named in Minnesota．
40．The Hull－Rust mine in Hibbing became the largest open－pit mine in the world．
41．Minnesota’s waters flow outward in three directions：north to Hudson（美国New York 州东部的河流）Bay in Canada，east to the Atlantic Ocean，and south to the Gulf of Mexico．
42．At the confluence of the Big Fork and Rainy Rivers on the Canadian border near International Falls stands the largest Indian burial mound（护堤，垛）in the upper midwest．It is known as the Grand Mound historic site．
43．Author Laura Ingalls Wilder lived on Plum Creek near Walnut Grove．
44．Akeley is birthplace and home of world’s largest Paul Bunyan Statue．The kneeling Paul Bunyan is 20feet tall．He might be the claimed 33feet tall，if he were standing．
45．Hibbing is the birthplace of the American bus industry．It sprang from the business acumen（敏锐）of Carl Wickman and Andrew“Bus Andy”Anderson—who opened the first bus line（with one bus）between the towns of Hibbing and Alice in 1914．The bus line grew to become Greyhound Lines，Inc．
46．The first official hit in the Metrodome in Minneapolis was made by Pete Rose playing for the Cincinnati（辛辛那提［美国俄亥俄州西南部城市］）Reds in a preseason（活跃季节前的，旺季前的）game．
47．Polaris Industries of Roseau invented the snowmobile．
48．Twin Cities－based Northwest Airlines was the first major airline to ban smoking on international flights．
49．Alexander Anderson of Red Wing discovered the processes to puff（喷出）wheat and rice giving us the indispensable rice cakes．
50．In 1898，the Kensington Rune stone was found on the farm of Olaf Ohman，near Alexandria．The Kensington Rune stone carvings allegedly（依其申述）tell of a journey of a band of Vikings in 1362．
Mississippi