I say re-do them from now. Don't waste energy on continuing from the 1940s into 1958. You already have the basic map information so the re-do should not take as long as the original effort. You could also do it in a sequence such as this: 2 redone maps in a post and one new map in a follow up post. Then create an index which places the maps in the correct order by post. For example: Post 358 has 1913 and 1914. Post 359 has 1945. Post 370 has 1915 and 1916. Post 371 has 1946 Index shows: Post 358 Post 370 Post 359 Post 371 Is that possible? That way you get to re-do the maps without keeping people waiting forever for new ones and still get to post at least 3 maps at a time.