This section is from the book "American Plumbing Practice", by The Engineering Record. Also available from Amazon: Plumbing: A working manual of American plumbing practice.
Hartford, Conn., April 10, 1886. Sir: One way to prevent discoloration of paint over tarred pipe is to paste firm, non-absorptive paper over the pipe and then apply the color.
M. P. Hapgood, Architect.
 
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