A reference is a rare set of all  3 Pre-Primer Teacher's Manuals. 

This very rare set includes all three Teacher's Manuals. Each book is almost like new, bound in heavy stock with cloth tape binding at spines as issued, and appears to be unused.

Each manual offers complete directions for all the teaching to be done during the use of each Pre-Primer.  Extremely rare Teacher's Manual set for an adorable Pre-Primer Series.  Truly a gorgeous set!

Very popular school series.
With Tip and Mitten, Jack and Janet.