Biblio
“Photographs Of The Zodical Light”. Popular Astronomy. Popular Astronomy.
. 1900. 
“Photographs Of The Zodical Light”. Astronomical Society Of The Pacific XIII (No. 78). Astronomical Society Of The Pacific.
. 1901. 
“An Optical Photograph”. The Astrophysical Journal XLI (No. 3). The Astrophysical Journal.
. 1915. 
“An Automatic Optical Photograph, Abstract”. Publications Of The Astronomical Society Of The Pacific. Publications Of The Astronomical Society Of The Pacific.
. 1919. 
“Photograph Of Shadow Bands”. Astrophysical Journal LXIII (No. 3). Astrophysical Journal.
. 1926. 