Portrait of Francesco Morosini, doge di Venezia — cropped
Photo Credit: Public Domain, https://commons.wikimedia.org/w/index.php?curid=3365365

Coat of arms of Venice —
Photo Credit: By Facquis - Own work basato sulle monete da 140 soldi dette "scudo della croce" coniate tra il 1595 e il 1797, CC BY-SA 4.0, https://commons.wikimedia.org/w/index.php?curid=82242139

Miguel de Cervantes — Portrait of Miguel de Cervantes Saavedra commonly said to be that which, according to the prologue to Cervantes' "Exemplary Novels", was painted by Juan de Jáuregui. Modern scholarship does not accept this, or any other graphic representation of Cervantes, to be authentic, nor is there any documentation for Jáuregui having painted this portrait.
Photo Credit: Public Domain, https://commons.wikimedia.org/w/index.php?curid=676819

Titus Livius —
Photo Credit: Public Domain, https://commons.wikimedia.org/w/index.php?curid=16754310

Numa Pompilius — From Promptuarii Iconum Insigniorum
Photo Credit: By Published by Guillaume Rouille (1518?-1589) - "Promptuarii Iconum Insigniorum", Public Domain, https://commons.wikimedia.org/w/index.php?curid=61825468

Roman Denarius with Romulus as Quirinus — C. Memmius C. f. 56 BC. AR Denarius (3.93 gm, 7h). Rome mint.
Photo Credit: By Classical Numismatic Group, Inc. http://www.cngcoins.com, CC BY-SA 3.0, https://commons.wikimedia.org/w/index.php?curid=4782551

Marcus Terentius Varro — An imagined portrait of an elderly Varro. Before 1923, artist unknown
Photo Credit: By Unknown author - Public Domain, https://commons.wikimedia.org/w/index.php?curid=44741087

Retrato póstumo de Wenceslao de Luxemburgo, duque de Brabante —
Photo Credit: By Unidentified painter - Public Domain, https://commons.wikimedia.org/w/index.php?curid=8126528

Wenceslaus IV, duke of Luxembourg, elector of Brandenburg —
Photo Credit: By User:Acoma - Vaclav4 modlitebnikniha.jpg, CC BY-SA 4.0, https://commons.wikimedia.org/w/index.php?curid=82565410

Kaiser Sigismund I. Sohn des Karl IV. von Luxemburg —
Photo Credit: By Formerly attributed to Pisanello - Kunsthistorisches Museum Wien, Bilddatenbank., Public Domain, https://commons.wikimedia.org/w/index.php?curid=4892110

Baroque library hall in Clementinum — Originally belonged to Charles University, today part of Czech National Library
Photo Credit: By BrunoDelzant - Flickr: [1], CC BY 2.0, https://commons.wikimedia.org/w/index.php?curid=33629611