Category

• Picture Postcards (3)
• Topographical (Cities, Towns etc) (3)

Specifications

• Multi-Subject (1)
• Printed Photo (1)
• Real Photo (1)

Country

• Bulgaria / България (3)

Attribute

• Picture Postcards (publishers, photographers, printers) (3)
• Philately (Postal History) (1)

Historical

• 1878-1944 Third Bulgarian State (2)

Geographical

• Pleven Area / Плевенска (1)
• Ruse Area / Русенска (1)
• Sofia Area / Софийска (1)

Topic

• Architecture, Buildings (1)
• Military & War (1)
• Ports & Harbors (1)
• Rivers ( Falls etc ) (1)
• Ships & Boats (1)
• Trains & Railway (1)

Kind of Item(s)

• Image items (3)