The Adsit Telephone Lock-out Attachment. Records, 1978., 2957-2B4-S3275, Box: 1 S2802-S2803-S2804-S2805-S2806-S2807-S2808-S2813-S2827-S2828-S2829-S2830-S2869-S3259-S3274. Southwest Minnesota Historical Center. https://smsu.libraryhost.com/repositories/3/resources/560 Accessed July 18, 2026.