Traceable history
Sources and image credits.
Institutional collections anchor the chapters. Openly licensed and public-domain images remain attributed to their creators.
Editorial source groups
- Library of Congress — Alexander Graham Bell Family Papers ↗
- Smithsonian National Museum of American History — Telephones ↗
- International Telecommunication Union — Institutional history ↗
- ETSI — Mobile smart-card standards ↗
- GSMA — eSIM specifications and overview ↗
- Computer History Museum — Mobile computing ↗
Image credits
Ordinary Bell telephone (1880)
Benoît Bonnafoux · public domain · Wikimedia Commons ↗
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Businessman on candlestick telephone
Creator unknown · public domain · Wikimedia Commons ↗
Black rotary telephone
Berthold Werner · CC BY-SA 3.0 · Wikimedia Commons ↗
Motorola DynaTAC 8000X
Redrum0486 · CC BY-SA 3.0 · Wikimedia Commons ↗
Nokia 3310, front
Beamish4 · CC BY-SA 4.0 · Wikimedia Commons ↗
GSM SIM card evolution
Cvdr, based on Justin Ormont's work · CC BY-SA 3.0 · Wikimedia Commons ↗
A note on product names
DynaTAC, Nokia and other names are used descriptively in historical context. Their presence does not imply endorsement, sponsorship or ownership by this publication.