Subject
- Clothing and dress -- Bulgaria10,116
- Ethnic costume -- Bulgaria10,116
- Ethnology -- Bulgaria10,116
- Landscapes -- Bulgaria10,116
- Marriage customs and rites -- Bulgaria10,116
- Material culture -- Bulgaria10,116
- Pottery -- Bulgaria10,116
- Rites and Ceremonies9,391
- Islamic manuscripts and books9,371
- Music9,112
- Architecture8,819
- Indigenous populations8,565
- Slavery8,510
- Portraits8,328
- Education8,106
- Commerce7,876
- Church records and registers7,716
- Land use7,602
- Genealogy7,400
- Human settlements7,363