Original map is dated 1916 but handwritten notes on map suggest 1919. Number of precincts (277) matches with records from 1920 U. S. Federal Census (see spl_saw_324183, linked above).
Measurements
51 x 32 cm
Digitization Specifications
Master image scanned in two pieces on Epson 10000 XL flatbed at 600 ppi, 24 bit color, and saved as TIFF files. Adobe Photoshop used to stitch images together, resize to 300 ppi, and convert to JPEG format. Master file size: 313,837,152 bytes (2 files).