Saturday Open Hours are on the 1st and 3rd Saturdays of the month. Admission is free at all times. This is the private collection of Mr Michael Stone and features 500 years of rare maps and atlases. Maps by Ortelius, Blaeu, and Ben Franklin. 20th century thematic maps by Jo Mora, including his rare cartoon map of San Diego. The 1493 "Columbus Letter". All this and much more is on display at the Museum. . Contact info@lajollamapmuseum.org to arrange a group visit.