REMOVE

1. negatives (photographs)
2. University of Colorado

WHAT

1. Clapp, Mr. (2)
2. Portrait photography (2)
3. black-and-white negatives (2)
4. negatives (photographs) (2)

WHERE

1. Boulder (2)
2. Colorado (2)

WHO

1. Snow, Charles F. (Charles … (2)
2. photographer (2)

WHEN

1. 1919 June 19 (2)