Version History for U.S. Geological Survey Circular 1553

The 3D National Topography Model Call for Action—Part 2: The Next Generation 3D Elevation Program

By Vicki Lukas, Larry Sugarbaker, Cindy Thatcher, Allyson Jason, and Jason Stoker
-----------------------------------------------------
First posted online July 23, 2025
-----------------------------------------------------
Revised and reposted July 28, 2025, as version 1.1.

On page vii, a space was added after "Earth" so that the term now reads "Earth MRI". 

On page 2, figure 1 was reformatted to fit the entire figure on the page. 

On page 13, figure number "fig. 7" was changed to "fig. 8". 

On page 13, additional information was added to figure 7 caption, the dates '2015-2023'.