College Radio Day celebrates 100 years of student radio history, with the Internet Archive's DLARC collection documenting its evolution from Harvard's 1906 Weld Phonepterograph Company through broadcast experiments at Dartmouth and Milwaukee School of Engineering in the 1920s to modern campus stations. Recent additions include materials from Duke, Amherst, Middlebury, and William & Mary showing how college radio developed from amateur radio clubs into dedicated student broadcast organizations.