I stumbled on another great find while prowling through the bookshops in Texas a few weeks ago. This one is a set of two Enciclopedia Larousse de los Pequenines: Los Adjetivos and Los Verbos.
This book is written completely in Spanish and I have not seen an English version. They are first editions, printed in 1986 and 1987. Both were written (and illustrated?) by Agnés Rosenstiehl.
I haven't been able to find any others online, though I have found copies of Diccionario Espanol - Ingles on Amazon. If you’d like to purchase this set, they are available on a first-come, first-served basis. Just visit the Mommy Maestra Specials page.
Con mucho cariño...