With daily updates coming from Keystone Dam the last two weeks, we wanted to take a moment to throwback to when the dam was first thought about: 1950.

That's when the Flood Control Act approved by Congress authorized the Keystone Dam project. Construction started in 1957. The first bucket of concrete was poured on Oct. 15, 1960. The last bucket came on Sept. 27, 1962.

The last bulkhead was installed on Sept. 11, 1964, closing the dam and allowing water to be captured. Just two months later, flood waters prompted the dam's spillway gates to be opened for the first time.

Here are photos from the Tulsa World Archive telling the story of the dam.