The Early Cybermen (audio story)

 was the second installment of The ArcHive Tapes anthology, narrated and produced by David Banks.

Following the genesis of the Cybermen, it covered the CyberMondasians' and CyberFaction's attacks on Earth in the 20th and 21st century, putting forward that, after the destruction of Mondas in The Tenth Planet, the CyberFaction broke into two races, the CyberNomads and the CyberTelosians.

Publisher's summary
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Plot
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Cast
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Continuity

 * The documents cover the "first invasion" by the Faction, (TV: The Invasion) the presence of Neomorphs in 1985, (TV: Attack of the Cybermen) the return and subsequent destruction of Mondas in 1986, (TV: The Tenth Planet) and the 21st century attacks on Space Station W3 (TV: The Wheel in Space) and the Moon. (TV: The Moonbase)
 * The narrator acknowledges that UNIT was founded as a result of the Doctor and Lethbridge-Stewart's encounter with the Robot Yeti, (TV: The Web of Fear) the Doctor's friendship with Edward Travers, (TV: The Abominable Snowmen) and Lytton's previous association with the Daleks. (TV: Resurrection of the Daleks)