1:1,000,000 M-31 (1975)
https://s3.eu-west-2.amazonaws.com/redatlas/M-31.jpg
1:1,000,000 M-31 (1939)
https://s3.eu-west-2.amazonaws.com/redatlas/M-31_1939.jpg
1:500,000 M31-A (1985)
https://s3.eu-west-2.amazonaws.com/redatlas/500k--m31-1.gif
1:200,000 M-31-01 (1986)
https://s3.eu-west-2.amazonaws.com/redatlas/M-31-01.jpg
1:100,000 M-31-013 (1982)
https://s3.eu-west-2.amazonaws.com/redatlas/M-31-013.gif
1:100,000 M-31-013 (1964)
https://s3.eu-west-2.amazonaws.com/redatlas/M-31-13_1964.jpg
1:50,000 M-31-13-001 (1981)
https://s3.eu-west-2.amazonaws.com/redatlas/M-31-013-1.jpg
For examples of City Plans see http://redatlasbook.com/cityplans
