https://www.poetryfoundation.org/poems/44731/lallegro
https://www.themorgan.org/collection/drawings/122794
https://bq.blakearchive.org/4.4.grant
https://blakearchive.org/copy/but543.1?descId=but543.1.wc.03
https://www.rct.uk/collection/search#/14/collection/653014/lallegro
https://www.britishmuseum.org/collection/object/P_1830-0612-15
... and there is musick ...
https://www.youtube.com/watch?v=PL_4VQphfQg
... to be continued ...
