@article {793, title = {Address at High School on Halleys Comet}, year = {1910}, note = {This title is available through the Tree Ring Laboratory; please contact the lab for more information. }, address = {Tucson}, keywords = {address, comet, Douglass, Halleys, high school, historic}, author = {unknown} } @article {797, title = {Halleys Comet}, year = {1910}, note = {This title is available through the Tree Ring Laboratory; please contact the lab for more information. }, address = {Tucson}, keywords = {astronomy, comet, Douglass, Halleys, historic, newspaper, tucson}, author = {Douglass, A.E.} }