Ten-year-old Rosemary thinks the word "Time" cut into a stone in her aunt's old herb garden should be spelled "Thyme" until she picks a sprig of the herb around it and discovers herself back in the eighteenth century.
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Used availability for Jane Louise Curry's Parsley Sage, Rosemary and Time
February 1975 : USA Hardback
August 2014 : USA, Canada, UK Kindle edition