Books on Clouds:
Elementary:
The Cloud Collector’s Handbook by Gavin Pretor-Pinney (The Cloud Appreciation Society; Chronicle Books; 2009)
Cloudspotter’s Guide—The Science, History, and Culture of Clouds by Gavin Pretor-Pinney (The Cloud Appreciation Society; Perigee Book; 2006)
The Book of Clouds by John Day (Sterling Publishing; 2006)
The Cloud Book: How to Understand the Skies by Richard Hamblyn (David&Charles Book; 2008)
The Stories Clouds Tell by Margret LeMone (American Meteorological Society; 2008)
Field Guide to Snowflakes by Kenneth Libbrecht (Voyageur Press; 2006)
Intermediate:
Introduction to Clouds: From the Microscale to Climate by Ulrike Lohmann, Fleix Lüönd and Fabian Mahrt: 2016 (Cambridge University Press; 2016)
Atmospheric Science 2nd Edition: An Introductory Survey: John M. Wallace and Peter V. Hobbs (Academic Press; 2006)
Advanced:
Atmospheric Convection: Kerry A. Emanuel: 1994 (Oxford University Press, 592 pp)
Cloud Dynamics 2nd Edition; Robert Houze, Jr.: 2014 (Academic Press, 496 pp)
A Short Course in Cloud Physics by R.R. Rogers and M.K. Yau (Butter-Worth Heinemann, 1989)
Atmospheric Thermodynamics by Craig F. Bohren and Bruce A. Albrecht (Oxford University Press, 1998)
History:
Meteorology in America, 1800-1870 by James Rodger Fleming (Johns Hopkins University Press; 1990)
The Invention of Clouds by Richard Hamblyn (Picador USA; 2001)