[Card] P 20475

[Image] 2021.13.0075

Potter's test piece with hole ... Jeff Vanderpool ... Well L 11:1. Horizontal (normal) ... 20 Apr 2021

[Image] 2021.12.1519

Potter's test piece with hole ... Jeff Vanderpool ... Well L 11:1. Horizontal (normal) ... 20 Apr 2021

[Image] 2021.12.1520

Potter's test piece with hole ... Jeff Vanderpool ... Well L 11:1. Horizontal (normal) ... 20 Apr 2021

[Image] 2012.80.1698 (94-50-30)

Potter's Test Piece with Hole ... AMS Horizontal (normal)

[Image] 2012.80.1699 (94-50-31)

Potter's Test Piece with Hole ... AMS Horizontal (normal)

[Drawing] PD 2773-27 (DA 5348)

Potters' debris test pieces wasters ... Anne Hooton ... Drafting Film Drafting Ink

[Notebook Page] ΩΔ-4-96 (pp. 783-784)

Potter's Test Piece with Hole. Potter's Test Piece. Well ... ΩΔ-4 783, 784 P 20474 P 20475 P 20476 P 20477 L 11:1 P 20474 P 20475 P 20476 P 20477 ... July 1946