A slight earthquake was felt distinctly by many persons at Iowa City, Iowa, on the afternoon of April 9, 1917. All of the persons who reported that they felt the shock were seated, lying down, or standing inside of buildings when the shock was detected. Those who were on the higher floors of buildings reported more distinctive evidences of the shock than did those who were nearer to the ground.
Proceedings of the Iowa Academy of Science
©1917 Iowa Academy of Science, Inc.
Kay, George F.
"A Note Regarding a Slight Earthquake at Iowa City, Iowa, on April 9, 1917,"
Proceedings of the Iowa Academy of Science, 24(1), 103-103.
Available at: https://scholarworks.uni.edu/pias/vol24/iss1/19