Vanadium — Crystal-bar vanadium, showing different textures and surface oxidation; 99.95%-pure cube for comparison
Photo Credit: By Alchemist-hp (pse-mendelejew.de). - Own work, FAL, https://commons.wikimedia.org/w/index.php?curid=14948517

University of Alcalá — The plateresque facade (R. Gil de Hontañón, 1543) of the most recognized building of the university
Photo Credit: By FDV - Own work, CC BY-SA 4.0, https://commons.wikimedia.org/w/index.php?curid=81436162

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