Coat of Arms of Richard III of England
The Digital Walter W.847, Book of English heraldry
St. James the Great Church, Radley, Oxfordshire
College of Arms. Vincent Ms 152 page 54.
The British Library. Add Ms 71511. Skelton, Bevil. The variations of the arms and badges of the severall kings of England ca 1684-87.
Elizabethan Armorial, Nobility of England
Baziliologia, a Booke of Kings. Portrait of King Richard III
Muttum with elements of Sodacan