- PascalineMechanism
- Exemplar and Replica Pascalines
- O.J. Adder Instructions for Use
- SurvivingPascalines
- CatalogueAmendmentByAuctionTeamBreker
- Extracts from Kepler's Letters
- OperatingInstructionsForAPascaline
- OldBabylonianTagNotes
- HerzstarkElectricMechanism
- FakesAndFalsePromises
- BlochSchnellkalulatorsInCollections
- Diderot and D'Alembert 1759 - Mechanism of the Pascaline
- Original Spalding Adding Machine Patent - US Patent 146407
- Article in La Nature, 1893 on the Centigraph
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