Golden Age of Bulgarian Literature — Tsar Simeon - Painting by Prof. Dimitar Gyudzhenov
Photo Credit: By ChernorizetsHrabar - Own work, CC BY-SA 4.0, https://commons.wikimedia.org/w/index.php?curid=80557616

Tsar Simeon the Great —
Photo Credit: https://bnr.bg/en/post/100207929/tsar-simeon-the-great

Vladimir-Rasate —
Photo Credit: https://bg-istoria.animatherapy.com/%d0%b2%d0%bb%d0%b0%d0%b4%d0%b8%d0%bc%d0%b8%d1%80-%d1%80%d0%b0%d1%81%d0%b0%d1%82%d0%b5/

Bulgaria under of Boris I —
Photo Credit: By The original uploader was Hxseek at English Wikipedia. - Transferred from en.wikipedia to Commons., CC BY-SA 3.0, https://commons.wikimedia.org/w/index.php?curid=11049382

Boris I of Bulgaria —
Photo Credit: By Ζαρκαδάκης - Own work, CC BY-SA 4.0, https://commons.wikimedia.org/w/index.php?curid=71286774

Bulgaria under Presian —
Photo Credit: By Kandi - Own work, CC BY-SA 3.0, https://commons.wikimedia.org/w/index.php?curid=19638404

Bulgaria under Presian —
Photo Credit: By Kandi - Own work, CC BY-SA 3.0, https://commons.wikimedia.org/w/index.php?curid=19638404

Bulgarian Empire Khan and Omurtag —
Photo Credit: By Димитър Ризов - Атлас на Димитър Ризов, 1917, Public Domain, https://commons.wikimedia.org/w/index.php?curid=89471506

Inscription to Malamir — Column fragment with inscription about the victorious campaigns of Khan Malamir (831-836), Shumen, now in the National Archaeological Museum in Sofia
Photo Credit: By Litev - Own work, CC BY-SA 4.0, https://commons.wikimedia.org/w/index.php?curid=63806424

Presian Inscription — Philippi Inscription 1, Philippi, Greece
Photo Credit: Public Domain, https://commons.wikimedia.org/w/index.php?curid=4410619

Omurtag delegation to Michael — Bulgarian king Omurtag sends delegation to Byzantine emperor Michael II from the Chronicle of John Skylitzes
Photo Credit: John Skylitzes / Public domain