When was the Atlas Life building dedicated?

On November 10, 1921, ground was broken to build the Atlas Life building. Companies began to move into the newly opened building in September 1922, and it was dedicated on November 23, 1922.

Source: Tulsa World Special Section, November 19, 1922. 

When was Central Library built?

Central Library construction was completed in 1965. W.C. Roads was the engineer and W.R. Grimshaw was the general contractor. With built-in equipment, the building cost $1,864,111 or $13.76 per square foot. The total cost was $2,735,269. The building had: 135,443 square feet of gross floor area with room to expand another 65,000 square feet; open shelf capacity for 265,000 volumes; closed stack and storage capacity for 250,000 more volumes.

Source Tulsa City-County Library 1912-1991, Okt 027.476686 L125t 1992.