Letter to Charlemagne
| Name of text: | Letter to Charlemagne | 
| Author of text: | Pope Hadrian | 
| Date of text: | 8th century | 
| Date of person in text: | Hadrian I 700-795 (Pope 772-795), Charlemagne 742-814 | 
| Name of structure in text: | Various churches built by S. Silvester (Pope 314-335) and Constantine | 
| Type of structure in text: | Church | 
| Date of structure in text | 4th | 
| Century of structure 1: | 4 AD | 
| Century of structure 2: | |
| Country in text: | Italy | 
| Region in text: | Lazio | 
| City in text: | Rome | 
| Specific place of mosaic in text: | |
| Description of mosaic in text: | the holy pontiffs, namely Sylvester, Mark [Pope Mark 336], and Julius [Pope Julius 1 337-352] painted the wonderfully large sanctuaries of their churches, also in mosaic, | 
| Mosaic date in text: | 4 AD | 
| Tesserae silver mentioned in text? | No | 
| Tesserae gold mentioned in text? | No | 
| Colour descriptions in text: | |
| Bibliography: | Labbe, Philippe and Gabriel Cossarti, eds, Sacrosancta Conciliaad regiam editionem exacta(Venice: 1729), vol. 7, quoted in Eugene Muntz, ‘The Lost Mosaics of Rome IV to IX Century’, The American Journal of Archaeology and of the History of the Fine Arts, 6.1/2 (1890), 1-9, see p. 7 | 
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| Comments: | 
