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In Dutch. Only the author's surname is given.
BLA 39
![Casteleyn, [-----?]. Letter to William Blathwayt](/_next/image?url=https%3A%2F%2Frail.huntington.org%2FIIIF3%2FImage%2F22APN4MOM76Q%2Ffull%2F%5E360%2C%2F0%2Fdefault.jpg&w=750&q=75)
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![Casteleyn, [-----?]. Letter to William Blathwayt](/_next/image?url=https%3A%2F%2Frail.huntington.org%2FIIIF3%2FImage%2F22APN4MOF9Z5%2Ffull%2F%5E360%2C%2F0%2Fdefault.jpg&w=750&q=75)
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