As the Blackfoot are one of the most studied American Indigenous groups there are many collections of Blackfoot music, the largest being at the Archives of Traditional Music at Indiana University. Historical comparisons may be made as the earliest recordings of Blackfoot music were done on wax cylinders. The first recordings, by George Bird Grinnell in 1897, are of James White Calf or others singing around forty songs in or around the Blackfoot Nation. The second set of recordings, by Clark Wissler in 1903 and 1904 contains 146 cylinders, part of his larger studies and the third, by J.K. Dixon of the Wanamaker Expedition No. 2 in 1909, includes several songs sung mostly by Chief Bull at the Crow Agency. The next big collection, by Jane Richardson Hanks accompanied by husband Lucien Hanks in 1938, was recorded in Gleichen, Alberta among the Canadian Blackfoot and featured Spumiapi ("White-Headed Chief"). After the invention of the tape recorder thousands of songs where recorded by Indigenous persons, ethnomusicologists, hobbyists and students, and record companies. (Nettl 1973)