1. In 1845, the first edition of the Oregon Spectator was published in Oregon City, marking the start of the first newspaper west of the Rocky Mountains. The paper championed the rights of settlers and advocated for statehood for Oregon.

2. In 1852, the first post office in Oregon was established in Oregon City. The town was a hub for early pioneer settlements and played a key role in the organization of the Oregon Territory.

3. On April 3, 1913, Dr. John McLoughlin’s house was moved from Oregon City to its new location in West Linn. The house, which was built by Oregon’s first provisional governor, has been restored and is now a National Historic Site.

4. In 1931, the three-mile-long Viking Ship Bridge was opened over the Columbia River between Oregon and Washington. The bridge, which featured the largest bascule span in the world at the time, connected Portland and Vancouver and eased traffic congestion between the two cities.

5. In 1973, the Oregon State Legislature passed Senate Bill 100, which established comprehensive land use planning statewide. The bill, which was one of the first of its kind in the nation, was aimed at protecting farmland, open space, and natural resources while promoting sustainable development.