"N.L.Robert, Portrait"
"Robert, English Patent sheet 1"
"Robert, English Patent sheet 2"
"Robert, Machine drawing, top elevation"
"Robert, Paper machine, ground plan, 1801 Patent"
"Robert, Paper machine, top plan, 1801 Patent"
"Robert, Paper machine, side section, 1801 Patent"
"Robert, Paper machine, cross sections, 1801 Patent"
"Robert, Paper machine, side view, 1801 Patent"
"Robert, Paper Machine, cross sections, 1801 Patent"
"Robert, Paper machine, Ground plan"
"Robert, Paper machine"
"Robert, Paper machine, side view"
"Robert, Paper machine"
"Robert, Paper machine, end of vat, cross section by rollers"
"Robert, Paper machine, cross section rollers, delivery end"
"Robert, Paper machine, cross section rollers"
"Berlin Technical Museum - Robert Machine"
"Berlin Technical Museum - Robert Machine"
"Berlin Technical Museum - Robert Machine"
