20.5x29 cm notebooks made of recycled paper. Each notebook is embossed with a word in gold, together forming "וְהַהַרְאֵל אַרְבַּע אַמּוֹת" (Ezekiel 43:15), “The Altar Hearth” in hebrew. The first notebook, labeled "וההראל" contains The Altar Hearth 1st and 2nd movements related drawings and notes. The second notebook, labeled "ארבע" (“Four”), contains blueprints of the sculptures, providing transcribed visions, notes, instructions and measurements. It was used to keep BWV 1006 folded during the exhibition. The third, "אמות" (“Cubits”) is for the coming intermezzo and final movement.