This design is featured in Patagonia + Hand Paints - Bumbles Hat & Mittens, a leaflet from JUNIPER MOON FARM, and uses JUNIPER MOON FARM yarn including Patagonia Organic Merino Hand Paints, and Patagonia Organic Merino
Errata
Please note the following changes to the Hat instructions:

Work rnds 1 to 48 from the chart. Cut yarn B. Continue working with yarn A.
Note: Decreases on Bumbles Chart round 48: Ssk, k14, k2tog: repeat from * 6 (7, 8) times—96 (112, 128) sts.
Set Up Rnds for Crown Decreasing: Ssk, p14, k2tog; rep from * 6, (7, 8) times—96 (112, 128) sts.
Set Up Rnd for Crown Decreasing: SsK, P12, K2tog; repeat from 6, (7, 8) times—84 (98, 112) sts.
Commence working …