Publishing house Gallus.
Authors: Naatan Haamer, Margit Arndt-Kalju
Compiler and editor: Margit Arndt-Kalju, co-editor Avo Üprus
Design of the book series: Mari-Liis Bassovskaja
Cover and layout: Aili Mittal-Jõgiste (Grafilius OÜ)

Here are some pages for example.