https://www.adam4eve.eu/hub_type_history.php?stationID=60008494&typeID=63140
A4E - Hub trade history 'Industrial Jump Portal Generator I'
jump portalhubtradehistoryindustrial
https://philosophyofscienceportal.blogspot.com/2009/12/pickerings-harem-and-annie-jump-cannon.html
Philosophy of Science Portal: "Pickering's harem" and Annie Jump Cannon
A print of this HCO photograph was found in an album that had once belonged to Annie Jump Cannon. The print was dated by tracing the HCO ser...
philosophy of scienceportalpickering