This document lists references for various 3D assets from the Unreal Engine Marketplace and Quixel that can be used in a virtual environment, including vegetation like spruce forests and grasslands, structures like castles and log cabins, props like barbed wire and crates, and materials like burnt wood and sandbags. The references provide links to assets on the Unreal Engine Marketplace and Quixel for temperate forests, fires, ruins, and military objects that were accessed on December 9, 2021.