- 单击地图以了解有关特定区域的避难所的更多信息。http://www.fws.gov/refuges/
- https://www.fws.gov/refuge/great-dismal-swamp
- Barrett 三年级和五年级的学生过去曾访问过 Patuxent。 点击链接了解更多关于这个避难所的信息。 https://www.fws.gov/refuge/patuxent-research
- http://www.pwrc.usgs.gov/
- https://www.fws.gov/refuge/elizabeth-hartwell-mason-neck
- https://www.fws.gov/refuge/occoquan-bay
- http://www.projectnoah.org/users/Laurie
