What I found is that written evidence for knocking on wood (and for the history of gesture as a whole) is remarkably sparse. In the Penguin Guide to Superstitions, folklorist Steve Roud offers a skeptical take on the provenance of knocking on wood due to the near total absence of written records about it:
list that page URL in the Well-Known URL for Relying Party Passkey Endpoints (prfUsageDetails)
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It’s time to pull the plug on plug-in hybrids
Waitrose, which is owned by the John Lewis Partnership, said it would replace its mackerel products with "responsibly sourced" alternatives in order to "make a stand against overfishing and support long-term health and sustainability of fish stocks".
«Наша семья опустошена внезапной кончиной нашего любимого мужа, отца и дедушки Нила Седаки. Настоящая легенда рок-н-ролла, источник вдохновения для миллионов...», — написали родные музыканта.