If you’ve spent any time in Los Angeles, it’s likely that you’ve encountered the work of Deborah Sussman. The signage in downtown’s Grand Park, on Santa Monica city streets, and on the buses of Santa Monica, Culver City, and the Van Nuys FlyAway are all the work of the indefatigable Deborah and her firm Sussman/Prejza.In 2014, LACMA curators began discussions with Sussman about the future of her archive. Fortunately, she had kept nearly everything she had ever worked on, so it was an…