Last Baltimore
Martin Aircraft 1909-1960 by Breihan/Piet/Mason carries on page 131 a photo stated as being the last A30 built (finished in grey & white)-see attachment (if I’ve managed to do it right).The book also comments that
(1)The last RAF use was in Kenya in 1948-used on locust control.
(2)BuAer 09804 was used until 1946 on airfoil trials before going to
a Baltimore school.
(3)No Baltimore survives to this day.