cooke's black diamond exhibition flying culminated in its appearance in the january 1912 los angeles international air meet at dominguez field. cooke's flying was outstanding, setting the meet record for endurance and altitude, winning $7,400 in prizes. in 1911 and 1912, including the los angeles prize money, cooke's flying earned maupin and lanteri's now named 'diamond airplane co.', a total of $14,800. the los angeles meet was the last flight of the black diamond. the black diamond was disassembled and put into storage and, in 1948, the maupin family donated it to the smithsonian. in 1998, it was offered to the hiller aviation museum where it was restored and put on display.