"Lawnside is a borough in Camden County, in the U.S. state of New Jersey. Lawnside was developed in 1840 and incorporated in 1926 as the first independent, self-governing black municipality north of the Mason–Dixon line" (Wikipedia).

https://whyy.org/episodes/lawnside-n-j-celebrates-rich-african-american-history/?fbclid=IwAR1aqni4lX4vvRrTLJb18iIwGk3s_p2IJFm1vqkhtV_z5DLvVXKZgwTlGys