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Letter; poor sales, family and friends

Letter; poor sales, family and friends

Letter; poor sales, family and friends

Letter; poor sales, family and friends

Sugar cultivation poem; mentions Bristol

Sugar cultivation poem; mentions Bristol

Copper smelting furnaces

Copper smelting furnaces

Diagram of early navigation device

Diagram of early navigation device

Diagrams of early navigation device

Diagrams of early navigation device

Diagram of early navigation device

Diagram of early navigation device

Diagram of early navigation device

Diagram of early navigation device

Diagram of early navigation device

Diagram of early navigation device

Diagrams of early navigation device

Diagrams of early navigation device

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