[1] After his mother's death in 1893, his father remarried to Susan Ridgway Willing, a sister of Ava Lowle Willing (who married John Jacob Astor IV).

Long-distance flights of Admiral Byrd, Charles Lindbergh, Amelia Earhart and Clarence Chamberlin were all made possible by the Whirlwind series of engines, which could operate continuously for 33.5 hours.

In discussion with Harry Bruno about his need for publicity to attract funds, he complained, "Who remembers Paul Revere's horse?

The radial engines gave confidence to Navy pilots performing long-range overwater flights.

[12] President Calvin Coolidge congratulated Lawrance for his development of the air-cooled aircraft radial engine that won the 1927 Collier Trophy for the year's greatest achievement in American aviation.