Union Pacific track reaches Ogden
President Grant directs Union Pacific and Central Pacific to set a meeting point. After an all night meeting, General Grenville Dodge of Union Pacific and Collis P. Huntington of Central Pacific agree to join tracks at Promontory Summit.
Union Pacific and Central Pacific railroads meet on May 10 at Promontory.
First non-Mormon church building in Utah (Church of the Samaritan) in Corinne is constructed.
John Wesley Powell explores the Colorado River.