- W. S. Cleveland (1993) is a classic book on the principles of visualisation for data analysis. While it is more than 20 years old, the ideas are timeless.
- Unwin (2015) is a modern introduction to graphical data analysis using R. It does not have much information on time series graphics, but plenty of excellent general advice on using graphics for data analysis.
Cleveland, W. S. (1993). Visualizing data
. Hobart Press. http://amazon.com/dp/0963488406
Unwin, A. (2015). Graphical data analysis with R
. Chapman; Hall/CRC. http://amazon.com/dp/1498715230