In the magazine Revue de la Societe Aeronautique from August 1930 there are articles (in French) on the Societe Aerienne Bordelaise (SAB) DB.70, DB.71 and DB.81. The articles have several photos, many of which were posted earlier in this thread. I enclose a drawing of the DB.70 passenger seating layout which I don't think has been posted previously.
DB.81 Features:
Wingspan: 12.0 m
Height: 2.9 m
Length: 8.0 m
Maximum depth of the wing: 1.90 m
Wing area: 16 sq m
Powerplant: 1x Lorraine engine of 120/150 hp
Empty weight: 708 kg
Weight of fuel: 122 kg
Weight of the pilot: 80 kg
Useful load: 220 kg.
Total weight: 1,100 kg
Load per square meter: 69 kg
DB.81 theoretical performances:
Speed max: 200 km/h
Cruising speed: 170 km/h
Landing speed: 80 km/h
Time to 1,000 meters: 5 minutes
Practical ceiling: 4,500 m
Range: 950 km
DB.71 Features:
Wingspan: 37 m
Length: 20 m
Height: 6 m.
Wing area: 206 sq m
Empty weight: 7,850 kg
Fuel weight 2,000 kg
Regulatory crew and accessories: 500 kg
Payload weight: 2,900 kg
Total weight: 13,250 kg
Powerplant: 3 x Lorraine Orion of 700 hp each
DB.71 theoretical performances (with "Orion" motors)
Ground level maximum speed: 220 km/h
Cruising speed at 1,000 meters: 200 km/h
Range: 1,000 km
Endurance: 5 hours
Practical ceiling: 5,000 m