Abstract: The present invention provides a system for sharing mapped information between multiple maps, including maps in different media states, in an accurate fashion. The system comprises a transparent overlay for transferring the mapped information, an alignment device for consistently aligning the displayed maps relative to the transparent overlay, and a fastening mechanism for securing the transparent overlay to a mapboard. The system may also include a mapboard, an electronic mapboard, and a computer. The system enables a user to accurately share information added to a map, possibly a digital or paper map, by recording the information onto the transparent overlay. The transparent overlay may then be transferred to a different map, possibly displayed in a different media, where the transparent overlay accurately reflects the recorded information.