Post date / 2016 / June / 24
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- Main Office Staff of Humble Oil, 1 of 2, August 17, 1931
- Main office staff of Humble Oil, 2 of 2, August 17, 19311
- Machinists and boilermakers, August 25, 1931
- Machinist and blacksmith department, October 26, 1920
- Development department and engineering department, circa 1932
- Joint conference group, 1932
- Joint conference group, 1932
- Joint conference group, 1932
- Guests leaving the exhibit area at Billion Gallon Day, December 14, 1944
- Audience enjoying floor show at Billion Gallon Day, December 14, 1944
- Buffet dinner was served at Billion Gallon Day, December 14, 1944
- Dignitaries and Humble Oil executives at Billion Gallon Day, December 14, 1944
- Dr. V.C. Baird greets a group at Billion Gallon Day
- Reserved section at Billion Gallon Day
- VIPs at Humble Billion Gallon Day chat with an employee before dinner