Jim Devine wrote,

> Of course, it's hard to figure out some times when one "stage" begins and
another ends.

1. 1851 - 1914
2. 1914 - 1945
3. 1945 - 1975
4. 1975 - 1991
5. 1991 - 2001

Just a suggestion.

Tom Walker
604 254 0470

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