== Eksterne links ==
* {{DNB-Portal|118552341}}
* [http://www.karl-hofer.de www.karl-hofer.de] med biografi og værker
* [http://www.kinderbuecher-geisenheyner.de/kinderbuecher/kinderb/forum/stark/hofer.html Karl Hofer som illustrator] {{Webarchive|url=https://web.archive.org/web/20080323040529/http://www.kinderbuecher-geisenheyner.de/kinderbuecher/kinderb/forum/stark/hofer.html |date=23. marts 2008 }}
* [http://www.artnet.com/artist/8373/Karl_Hofer.html Ni billeder på artens.com]
* [http://www.andreasbaumgartl.de/hoferthema.html Senere værker (efter 1942)] {{Webarchive|url=https://web.archive.org/web/20120210161639/http://www.andreasbaumgartl.de/hoferthema.html |date=10. februar 2012 }}
* [http://www.karl-hofer-gesellschaft.de/sites/karl-hofer-gesellschaft/content/index_ger.html karl-hofer-gesellschaft.de] {{Webarchive|url=https://web.archive.org/web/20100508011413/http://www.karl-hofer-gesellschaft.de/sites/karl-hofer-gesellschaft/content/index_ger.html |date= 8. maj 2010 }} Website for Karl-Hofer-Gesellschaft i Berlin
* [http://www.karl-hofer-komitee.de Karl Hofer Komitee] {{Webarchive|url=https://web.archive.org/web/20170630131737/http://www.karl-hofer-komitee.de/ |date=30. juni 2017 }}
* [http://www.van-ham.com/datenbank-archiv/datenbank/karl-hofer.html Værker af Karl Hofer] {{Webarchive|url=https://web.archive.org/web/20160623145522/http://www.van-ham.com/datenbank-archiv/datenbank/karl-hofer.html |date=23. juni 2016 }}
Maleri