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This illustration from Margaret Tarrant's Nursery Rhymes was republished many times in different formats over the next 80 years. it is likely that this monochrome version, adapted from the original colour version, was for a later publication, possibly by a publisher's in-house artist. Due to the costs and limited supplies of paper and ink during both world wars, it is possible it was for one published during either of the wars, research is ongoing.
Little Jack Horner
Sat in a corner,
Eating a Christmas pie;
He put in his thumb,
And pulled out a plum,
And said, 'What a good boy am I!'