Aanval op Fort Sumter: verschil tussen versies

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1 (onbereikbare) link(s) aangepast en 0 gemarkeerd als onbereikbaar) #IABot (v2.0.8.1
Regel 62:
* [https://web.archive.org/web/20200207113531/https://www.nps.gov/parkhistory/online_books/hh/12/index.htm National Park Service Historical Handbook] <!-- Note that this contains a lengthy public-domain history of the battle if someone wants to import it and fix it up. -->
* [http://www.tulane.edu/~sumter/index.html Crisis at Fort Sumter]
* [https://web.archive.org/web/20150619231946/http://www.civilwarhome.com/CMHsumter.htm Details of requests for surrender prior to the battle]
* [http://www.civilwarhome.com/sumterownership.htm Discussion of transfer of federal property within state boundaries]