Spink (1939 Part C + Field Notes) County, SD Air Photos Pedology CD 05-6 D.D. Malo, M.G. Filholm, and C.A. Larsen The air photos on this CD were scanned at a resolution of 200 dots/inch and the images are stored in tagged image format (*.tif). The images were scanned using a grayscale. The images on this CD are not easily available from other sources (e.g., USDA-NRCS or EROS Data Center) and were scanned to preserve them for future use. The paper copies of the air photos were deteriorating and this method was used to keep the information. The photos are from Spink (1939 Part C + Field Notes) County, SD. No index map was prepared for the photos. The scale of the original photos was 1:15,840 or 4.0 inches = 1 mile. The inventory of images does not represent coverage of the entire county. The images contained on this CD represent part of the air photo collection for Spink County, SD that the South Dakota State University (SDSU) Pedology Project had on June 2005. The structure of the files on the CD is as follows: 1. There is a file folder for the county (e.g., Spink). 2. Within the county folder there is a folder for the year and month of the air photos (e.g., 1939Sep). 3. Within the year folder there are files for each photo scanned. The images are identified by the code used on the original photo/image. There is a county ID, a flight ID, (MORE) and a photo ID on each air photo and that is what was used to name the image (e.g., CBX-4-56). 4. The original photo ID information was scanned with the photo (top of the image). The photo ID location represents either the west or north side of the image. 5. Spink County, SD photo code – CBX. This CD contains 119 images, plus 23 backside images, from 1939 for Spink County, SD. Additional images for counties in SD are available (cost = $12/CD) from: Pedology Project Box 2140C, NPB 247C Plant Science Department South Dakota Agricultural Experiment Station South Dakota State University Brookings, SD 57007-2141 VOICE: 605.688.4586 FAX: 605.688.4452 Email: Douglas.Malo@sdstate.edu