1st row, German Rumpler C 1s (?), Fairey IIIC of the FAA, Farman Shorthorn of the Imperial Russian Naval Air Service,
2nd row, Russian Shorthorn, Rumpler 6B1 (736),
3rd row, Curtiss H `America´(?), Shorts landbased bomber (derived from the model 184),
4th row, Shorts landbased bomber.

Regards,

Jan