The imaging system on the Viking Landers consisted of two identical cameras. These cameras operated throughout the mission and returned nearly 6600 images. This dataset includes the Experiment Data Record (EDR) version of all available images acquired on Mars by the Viking Lander imaging systems. This EDR dataset is the primary record of lander image data as it was received on Earth. EDR images were originally distributed to lander imaging team members and to NSSDC as photoproducts and digitally on 9-track magnetic tapes. The images in this dataset have not been processed in any form other then generating and attaching PDS labels and histograms to the original EDR data. This dataset also includes documentation about the imaging system and radiometric and geometric calibration of the image data EDR images for loading into spreadsheet or DBMS programs.