Contributor
RickStudent, Philosopher, Writer, Developer
Crest of Spanish University
Photo Credit: By Source (WP:NFCC#4), Fair use, https://en.wikipedia.org/w/index.php?curid=55924583
Andrés Manuel del Río
Photo Credit: By Anonymous - Public Domain, https://commons.wikimedia.org/w/index.php?curid=442961
The element erbium
Photo Credit: By Tomihahndorf - Foto aus meiner Elementesammlung, CC BY-SA 3.0, https://commons.wikimedia.org/w/index.php?curid=1743689
The element terbium
Photo Credit: By Unknown - http://images-of-elements.com/, CC BY 1.0, https://commons.wikimedia.org/w/index.php?curid=9084208
Pure Lanthanum
Photo Credit: By Jurii (Original uploader was Lanthanum-138 at en.wikipedia - http://images-of-elements.com/lanthanum.php, CC BY 3.0, https://commons.wikimedia.org/w/index.php?curid=15319998
Carl Gustaf Mosander
Photo Credit: By Painting by Karl Gustaf Plagemann (1805-1868) - http://libris.kb.se/bib/12445599, Public Domain, https://commons.wikimedia.org/w/index.php?curid=4287298
Lithium floating in oil
Photo Credit: By W. Oelen - http://woelen.homescience.net/science/index.html, CC BY-SA 3.0, https://commons.wikimedia.org/w/index.php?curid=15359548
Johan August Arfwedson
Photo Credit: By Fehr and Miller of Stockholm - Public Domain, https://commons.wikimedia.org/w/index.php?curid=4661705
Thorium sample
Photo Credit: By Alchemist-hp (talk) (www.pse-mendelejew.de) - Own work, FAL, https://commons.wikimedia.org/w/index.php?curid=15037460
Purified Silicon
Photo Credit: Public Domain, https://commons.wikimedia.org/w/index.php?curid=3520523
cropped
Charles XIII of Sweden — cropped
Photo Credit: By Carl Frederik von Breda - Rojalist, Public Domain, https://commons.wikimedia.org/w/index.php?curid=69368