Outline Map of Lehigh County.

1876

Davis, F.A.

1:25k

Allentown West

1937

1:63k

Slatington

1900

1:63k

Allentown West

1937

1:48k

Allentown West

1942

1:63k

Slatington

1902

1:63k

Slatington

1902

1:63k

Alburtis

1957

1:63k

Allentown West

1942

1:63k

Alburtis

1957

1:63k