"James R. Walker’s Campaign against Tuberculosis on the Pine Ridge Indian Reservation"https://www.sdshspress.com/journal/south-dakota-history-34-2/james-r-walkeras-campaign-against-tuberculosis-on-the-pine-ridge-indian-reservationhttps://www.sdshspress.com/@@site-logo/sdshp-logo.jpg
"James R. Walker’s Campaign against Tuberculosis on the Pine Ridge Indian Reservation"