Winter bulletin, 2017/2018, for Shenandoah National Park
United States National Park Service
<a rel="nofollow" class="external free" href="https://www.nps.gov/shen/planyourvisit/upload/2017-18_WinterBulletin_Accessible.pdf">https://www.nps.gov/shen/planyourvisit/upload/2017-18_WinterBulletin_Accessible.pdf</a>