Alcuni siti utili alla stesura della relazione:

https://patents.google.com/
https://books.google.it/
http://www.gracesguide.co.uk/Main_Page
https://archive.org/index.php
http://www.europeana.eu/portal/it
http://www.museogalileo.it/
http://gallica.bnf.fr/accueil/?mode=desktop
http://www.nationalarchives.gov.uk/
http://www.loc.gov/rr/scitech/tracer-bullets/historyoftechtb.html#scope
http://www.historyoftechnology.org/links.html
http://dmd.mpiwg-berlin.mpg.de/home
http://www.sbn.it/opacsbn/opac/iccu/base.jsp
http://opac.biblio.polito.it/F/26PGFHFGVG8EJPG5HD1FSQI2VXB85B4EGSYGX5HT8CNIQ2I66Q-05616?func=file&file_name=base-list
http://libguides.caltech.edu/patents
http://libguides.princeton.edu/c.php?g=84024&p=540963
http://patentpending.blogs.com/
http://www.sciencemuseum.org.uk/about-us/collections-and-research/collections
https://www.si.edu/collections
http://www.archivioluce.com/archivio/#n
http://www.museoscienza.org/collezioni/