1 photo

• Sort by: number of views (most to least) number of views (least to most) number of comments (most to least) number of comments (least to most) number of favorites (most to least) number of favorites (least to most) date uploaded (newest first) date uploaded (oldest first) random

• Identified! [Daniel W. Kessler of the National Bureau of Standards with device used to test slabs of marble over long periods of time] ? (LOC)

  • Uploaded by: The Library of Congress
  • License: No known copyright restrictions
  • 15 comments
  • 35 favorites
  • 22,812 views
  • Date taken: 1925
  • Date uploaded: 2015-10-02
  • Tags: libraryofcongress, dc:identifier=httphdllocgovlocpnphec45047, xmlns:dc=httppurlorgdcelements11, danielwkessler, bureauofstandards, dwkessler, stone, testing, apparatususedformakinglongperiodscrubbingtestsonmarble, mysterysolved
  • Visibility: public