Once you gain the ability to free roam Hope County, you can pick up the photographs from the second floor of Prosperity. This will start you on the '
A Thousand Words' side mission and will require you to find 9 locations you visited during Far Cry 5 and match up the before photos with the current state of them. Below is a video guide to all locations.
0:00 - Quest Start
0:25 - John Seeds Ranch
1:08 - Nick Rye's House
1:40 - Fall's End Water Tower
2:16 - Holland Valley Grain Elevator
2:54 - Bridge of Tears
3:38 - Gardenview Orchards
4:23 - Mastodon Geothermal Park
5:00 - Joseph Seed's Compound
5:44 - Mckinley Dam