Some Possible W. L. Shaws
Ted Banning writes:

To read the earlier E-Sylum article, see:
WHO WAS W. L. SHAW?(https://www.coinbooks.org/v27/esylum_v27n26a12.html)

Vattemare and Fake 1815 Cents
Ted Banning adds:

To read the complete Coin World article, see:
1815 the only date since 1793 for which no cents can be found(https://www.coinworld.com/news/us-coins/coin-world-numismatics-coin-collecting-hobby-1815-cents-philadelphia-mint-bill-eckberg-war-of-1812-american-history-us-coins.html)

To read earlier E-Sylum articles, see:
ALEXANDRE VATTEMARE AMERICAN ALBUM INFORMATION SOUGHT(https://www.coinbooks.org/esylum_v10n23a09.html)
ALEXANDRE VATTEMARE ADDENDA REDISCOVERED(https://www.coinbooks.org/v24/esylum_v24n05a07.html)
WHO WAS W. L. SHAW?(https://www.coinbooks.org/v27/esylum_v27n26a12.html)

The World's First Cash Machine
Steve Hill of Sovereign Rarities Ltd writes:

To read the complete articles, see:
London Bank - Home to the World's First Cash Machine - Listed(https://historicengland.org.uk/whats-new/news/enfield-bank-listed/)
Why Was The World's First Cash Machine In Enfield?(https://londonist.com/2016/01/why-was-london-s-first-cash-machine-in-enfield-1)

Sen. Leverett Saltonstall Mystery Badge
Anne Bentley of the Massachusetts Historical Society writes:

Novel's Plot Centers on Numismatics
Gerald Tebben writes:

On Coin Shows
Fremont CA Coin Club President Keith Scott writes: