The seventy-ninth volume of the Archives of Maryland series is the Digital Image Reference System for Land Survey, Subdivision, and Condominium Plats. This volume is incomplete and requires a password for access. To request a password send an e-mail to msahelp@mdsa.net.

Plats.net is a system developed by the Maryland State Archives, the Administrative Office of the Courts, and Maryland Circuit Court Clerks to preserve and make accessible all plats filed with the Land Office and the Circuit Courts of Maryland.

Plats are cartography relating to land ownership. They represent in graphic and pictorial terms the metes and bounds of properties as described in deeds. As such, plats are crucial to understanding and documenting the conveyance of land title in Maryland. Attorneys, realtors, surveyors, title searchers, and private citizens need to consult plats recorded in the circuit courts when researching property boundaries and land conveyances.