Steel engraving by Samuel Hollyer from a lost daguerreotype by Gabriel Harrison.
From the en.wikipedia.org
One of them is Edouard Willmann's 1866 steel engraving, which shows the hill's gradual rise beginning at Smithfield Street.
From the post-gazette.com
More than 50 of the steel engraving plates are fold-out, a number of them quite large, some unfolding to more than 2 feet in length.
From the en.wikipedia.org
Baroque and rococo aesthetic trends, use of the pointed-pen for writing, and steel engraving techniques effected a gradual shift in typographic style.
From the en.wikipedia.org
The buildings are shown in a steel engraving dated approximately 1856, which also suggests that the crescent was closed at one end with railings which also continued around the gardens.
From the en.wikipedia.org
No such accuracy could be obtained by engraving on wood or steel.
From the ethanzuckerman.com
The most important of the tools used in line-engraving is the burin, or graver, a bar of steel with one end fixed in a handle, somewhat resembling a mushroom with one side cut away.