(en) Helen Pilcher, « No Great Flakes », New Scientist, (lire en ligne [archive du ] [PDF], consulté le ).
sbstatesman.com
(en) Mallory Locklear, « Under the microscope: snowflakes are not as symmetrical as pictured », The Statesman, (lire en ligne, consulté le ).
si.edu
(en) « Snowflake Study », sur The Smithsonian : « By adapting a microscope to a bellows camera, and after years of trial and error, he became the first person to photograph a single snowflake in 1885. »