Donald L. Kreider, of Sugar Hill, NH, died unexpectedly on Thursday, December 7, 2006, at age 75. He was born in Lancaster, PA, son of the late Jacob Lester Kreider and Rosanna (Rittenhouse) Kreider. He was educated at Lititz High School in Lititz, PA, and graduated from Lebanon Valley College in 1953 where he held the track record for high hurdles. Kreider received a PhD from MIT in mathematical logic in 1959. At MIT, in recognition of his conspicuously effective teaching, both as a graduate student and as a member of the academic staff, he was awarded the Goodwin Medal in 1958.<br><br><a href='http://www.dartmouth.edu/~news/releases/2006/12/12.html&#039; target='_blank'>http://www.dartmouth.edu/~news/releases/2006/12/12.html&lt;/a&gt;&lt;br&gt;&lt;br>