| Industry News | 718 |
| Calendar | 718 |
| Table of Contents | 719 |
| Mapping Matters | 721 |
| GIS Tips & Tricks | 723 |
| Certification | 724 |
| Book Review: Lining Up Data in ArcGIS: A Guide to Map Projections | 725 |
| Grids & Datums: Oriental Republic of Uruguay | 727 |
| In Memoriam: Ralph Winston Kiefer | 730 |
| Signatures: The Column of the ASPRS Student Advisory Council | 731 |
| Journal Staff | 733 |
| ASPRS News | 733 |
| New ASPRS Members | 734 |
| Sustaining Members | 735 |
| Turbid Underwater Polarization Patterns Considering Multiple Mie Scattering of Suspended Particles | 737 |
| Who's Who in ASPRS | 744 |
| Polarization of Light Reflected by Grass: Modeling Using Visible-Sunlit Areas | 745 |
| Calibration of Frequency Shift System of Wind Imaging Interferometer | 753 |
| Optimal Demodulation Algorithm of Spatially Modulated Full-Polarization Imaging System | 761 |
| Sensitive Research of Scattering and Absorbing Aerosols on Sky Polarization Pattern | 767 |
| PE&RS Media Kit 2021 | 777 |