Helpful Espalier Resources:
Here is an old GF thread on Lorette’s book (free through Cornell)
That Cornell link didn’t work for me, but this one did
A helpful summary in Michael Phillips’s Holistic Orchard on pp 89-93
Also, I like Espalier Fruit Planting for Northern Gardens, by Perry & Getter (2022). I first heard Dr Perry on an Orhard People podcast:
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