Historial de canvis
19 juny 2008
→California
→California
+96
→Yellowstone, WY
+66
→Yellowstone, WY
+1
→Yellowstone, WY
+143
→Reserves
+38
→Yellowstone, WY
+123
→Reserves
−27
→Reserves
+269
→Yellowstone, WY
−542
→California
−15
→Requisits
+59
18 juny 2008
→Jasper i Banff
+20
→Reserves
−256
→Grand Canyon i Las Vegas
+104
→Parcs Utah/Arizona
+53
→Requisits
+191
→Parcs Utah/Arizona
−2
→Grand Canyon i Las Vegas
+41
→Grand Canyon i Las Vegas
+16
17 juny 2008
→Grand Canyon i Las Vegas
+20
→Yellowstone, WY
+6
→Yellowstone, WY
+98
→Yellowstone, WY
+223
→Yellowstone, WY
−709
→Parcs Utah/Arizona
+8
→Grand Canyon i Las Vegas
+1
→Grand Canyon i Las Vegas
+69
→Reserves
+23
→Ruta
−5
→Ruta
−48
→Parcs Utah/Arizona
−1
→Parcs Utah/Arizona
−31
→Grand Canyon i Las Vegas
+48
→Grand Canyon i Las Vegas
+86
→Grand Canyon i Las Vegas
+87
→Grand Canyon i Las Vegas
+54
→Grand Canyon i Las Vegas
+149
→Grand Canyon i Las Vegas
+97
→Grand Canyon i Las Vegas
+66
→Grand Canyon i Las Vegas
+73
→Grand Canyon i Las Vegas
+95
→Grand Canyon i Las Vegas
→Grand Canyon i Las Vegas
+10
→Grand Canyon i Las Vegas
+4
→Grand Canyon i Las Vegas
+360
→Yellowstone, WY
+118
→California
+110