This image was acquired from
wikimedia. It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
Keywords from Image Description:
EdwardWrightCertaineErrorsinNavigation. Edward Wright Certaine Errors in Navigation arising either of the Ordinarie Erroneous Making or Vsing of the Sea Chart Compasse Crosse Staffe and Tables of Declination of the Sunne and Fixed Starres Detected and Corrected The Voyage of the Right Ho George Earle of Cumberl to the Azores London