@article{observations:3315,
      author = {Settle, Henry B., 1881-1956},
      url = {http://digitalcoll.skidmore.edu/record/3315},
      title = {[Science class - Margarette E. Griffith Hall - students  making observations with microscopes]},
      recid = {3315},
      pages = {gelatin silver print ; 20.3 x 25.4 cm. ; [printed later  from original negative]},
      address = {1920},
}