"Esperanto for Beginners " D.O.S. Lowell, 1923 (No. 465 - Little Blue Book)
 
Systematic in its approach, the text outlines the sixteen core grammatical rules of Esperanto to demonstrate how the language operates without a single exception or irregular verb. The manual begins with a focus on phonetics, teaching readers that every letter represents a unique, consistent sound and that word stress always remains on the penultimate syllable. From there, it transitions into the building blocks of communication, introducing a "correlative" table for logical word-building and a series of prefixes and suffixes that allow a learner to expand a small vocabulary into thousands of meanings. This instructional flow concludes with short reading exercises and a foundational dictionary, all designed to move a novice from basic recognition to the point where they can construct original sentences for international correspondence.