They remained in the Football League until 1987 , when they became the first club to suffer automatic relegation to the Conference National .
Lincoln moved in and out of the Football League until they became founder members of the Football League Third Division North in 1921 .
Lincoln remained in the Football League until 1987 , when Lincoln became the first club to suffer automatic relegation to the Conference National .
Lincoln moved in and out of the Football League until they became founder members of the Football League Third Division North in 1921 .