This is the serif text family for the book design group of font families which David designed in the process of writing “Practical Font Design With FontLab 5”. The letterspacing is set wide for body copy use. The main purpose is readability and reading comfort.
There are several whimsical graphics, plenty of OpenType features: oldstyle figures [tabular and not], small cap figures, lining figures [tabular and not], discretionary ligatures, small caps, and so on. The feature set is limited for the italic and bold versions. It produces an exceptional book.
For a great deal on the Librum Book Design Group, all fifteen fonts, please look at the bottom of the Buying Choices tab!