| No. | time period | cases |
| 1 | Pre-humans Scraping and Shaping - 5000 to 10,000 BP | case 1 - Glaciation |
| 2 | First Peoples - 10,000 BP to 1760 | case 2 - Moving Lands - Moving People |
| 3 | Contact - Clash of Cultures 1760 to 1860 | case 3 - A Curving Road |
| 4 | Pioneer Settlement 1860 to 1900 | case 4 - Survey and Logging |
| 5 | Rural to Urban 1900 - 1929 | case 5A - Early Farming |
| case 5B - Milk From The Cow |
| case 5C - Historic Light Rail |
| 6 | WWII and Internment 1939 - 1944 | case 6A - Military Service |
| case 6B - Internment |
| 7 | Suburban Spread 1944 - 1962 | case 7A - Suburban Development |
| case 7B - Racial Diversity |
| 8 | 1962 - 1975 | case 8A - Pollution and Solutions |
| case 8B - Salmon and the City |
| 9 | 1975 - Present | case 9 - Religious Tolerance and Intolerance |
