The "Dodo-Postcards" watermark is NOT on the actual card – it is an online watermark only.
Steam Shovels at Work in Culebra Cut. Panama Canal. The Valentine Souvenir. Famous Superior Quality
Business End of Steam Shovel filling flat Cars showing plow used for Emptying the Cars. Culebra Cut. Panama Canal. Headquarters. C. T. Photochrom
The Famous Gaillard Cut. Culebra Cut of The Panama Canal. Mirro Krome. H. S. Crocker. Flatau. PM. Cristobal. 1978
Sluicing Culebra Cut. Panama Canal
Slide in Culebra Cut. Panama Canal. Post Card Headquarters. C. T. Photochrom
Steamshovel in Culebra Cut. Panama Canal. I. L. Maduro Jr. No. 5366
Panama Canal. Culebra Cut Showing Gold Hill. I. L. Maduro Jr. No. 19 C
Panama Canal. The Great Culebra Cut. I. L. Maduro
