@article{annals-of-iowa 7814, author = {Margaret Walsh}, title = {Iowa's Bus Queen: Helen M. Schultz and the Red Ball Transportation Company}, volume = {53}, year = {1994}, url = {https://pubs.lib.uiowa.edu/annals-of-iowa/article/id/7814/}, issue = {4}, doi = {10.17077/0003-4827.9845}, abstract = {}, month = {10}, pages = {329-355}, issn = {2473-9006}, publisher={State Historical Society of Iowa}, journal = {The Annals of Iowa} }