center of Duchrow 51.1 through round 78
(Vol. II, photo page 73, chart page 75)

Schnelling 5.3 - Doily uses Duchrow 51.3 chart to round 61 with border variation

Schnelling 5.4 - Doily uses Duchrow 51.3 chart to round 78 with border variation
Schnelling Pamphlet No.5 Design 4 (Penning pg 20 Chart 1, additional written directions pg 21).
Source uses size 30 cotton and size 0 needles for an approximate diameter of 15 inches/38 cm. Pattern contains 79 rounds and a crochet bind off.

Schnelling 5.5 - Centerpiece uses Duchrow 51.3 center and the border chart for Duchrow 51.1