Draft the townhouse on watercolor paper with pencil.

首先用铅笔轻力在水彩纸上起稿。

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Work on this "prototype" allowed him to figure out technique, layout and technical details like the type of paper (19-by-13-inch watercolor) and writing instruments (felt-tip pens).

WSJ: Unlikely NY scribe handwrites Good Book in 4 years

Both exhibitions have a lot to teach us about an array of materials used on paper, from pencil and charcoal to pastel and watercolor, while the examples from the Clark are also instructive about diverse print techniques, from woodcut to lithography a hot new medium for late 19th-century artists.

WSJ: Fine Lines | Frick Collection | Brooklyn Museum | by Karen Wilkin