Simplify the following text for a Grade 6 native English-speaking person.
Original: In 1920 , Dr. Harry Mera , an archaeologist won a contest to design a new state flag and chose the Zia sun symbol because he was familiar with the one that was found in Zia Pueblo on a 19th century pot .
Simplified: A contest to design the new state flag was won by Dr. Harry Mera of Santa Fe , New Mexico . Mera was an archaeologist who was familiar with the Zia sun symbol found at Zia Pueblo on a 19th century pot .