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

Khan Omurtag of Bulgaria — From the Chronicle of John Skylitzes
Photo Credit: Public Domain, https://commons.wikimedia.org/w/index.php?curid=2720148

Constantine VI. 780-797. Solidus — Gold, 4.47 g 6. COnSTAnTInOS bAS’ Θ Beardless crowned bust of Constantine VI facing, wearing chlamys and holding cross on globe in his right hand and akakia in his left.
Photo Credit: By Classical Numismatic Group, Inc. http://www.cngcoins.com, CC BY-SA 3.0, https://commons.wikimedia.org/w/index.php?curid=28604341

Constantine VII Porphyrogenitus —
Photo Credit: Public Domain, https://commons.wikimedia.org/w/index.php?curid=25484138

Patriarch Euthymius I —
Photo Credit: By Unknown, 13th-century author - History of John Skylitzes - Public Domain, https://commons.wikimedia.org/w/index.php?curid=32401786

Zoe Karbonopsina —
Photo Credit: By Classical Numismatic Group, Inc. http://www.cngcoins.com, CC BY-SA 3.0, https://commons.wikimedia.org/w/index.php?curid=9442045