The first videotape contains the following:

Serial: C  Episode Nos. 12 and 13.  Title: The Edge of Destruction (also known as Inside the Spaceship)

After departing the Dalek planet Skaro, the TARDIS is rocked by an explosion and the crew is concussed. They awake confused and afraid, unable to understand what's happened, where they are, or why the Ship appears almost dead.
Suspicions of an alien intruder turn to accusations of sabotage, and tensions boil to the point where the Doctor threatens to
throw his companions out of the Ship...

This is the only story that takes place entirely inside the TARDIS, and the only one to feature no guest cast.

starring William Hartnell as Dr. Who, William Russell as Ian Chesterton, Jacqueline Hill as Barbara Wright, and Carole Ann Ford as Susan Foreman.  Written by David Whitaker, Associate Produced by Mervyn Pinfield, Produced by Verity Lambert, Directed by Richard Martin and Frank Cox.

Originally transmitted from 8 February 1964 to 15 February 1964 on BBC1.
 

Title:  Doctor Who - The Pilot Episode - An Unearthly Child

On the 27th of September, 1963, the first episode of Doctor Who was recorded to videotape.  This first recording was
never broadcast after being deemed unsatisfactory by Head of Drama and series creator Sydney Newman.  The main flaws
cited were technical problems with the production and characterisation flaws in the leads, particularly in the Doctor
and Susan.  Many changes were made and the final official version was recorded three weeks later, and debuted on
the BBC on the 23rd of November.
This, however, is the original "pilot" version, the one that never made it to broadcast, and is presented in its whole form
and also with two retakes of the interior TARDIS scene made necessary by the refusal of the Ship's doors to close
properly!

starring William Hartnell as Dr. Who, William Russell as Ian Chesterton, Jacqueline Hill as Barbara Wright, and Carole Ann Ford as Susan Foreman.  Written by Anthony Coburn, Associate Produced by Mervyn Pinfield, Produced by Verity Lambert, Directed by Waris Hussein.

Never transmitted as part of the series.  Transmitted once on BBC2 on 26 August 1991 as part of a "closing down
celebration" of the studio where the episode was recorded.  One version of this pilot (using the TARDIS scene take
where the doors closed properly) has been previously released on the special video Doctor Who - The Hartnell Years.
 

The second videotape contains the following:

Title:  The Missing Years

A 30-minute documentary produced specially by BBC Worldwide in 1998 explaining the reasons why many episodes are
missing, where episodes have turned up, fan efforts to retrieve missing episodes, and most importantly, presenting
extant film clips from episodes that are lost apart from these said clips.

Highlights of these recovered clips include:
    A nearly 6-minute scene from the first episode of the lost William Hartnell story Galaxy 4, where the Doctor, Steven,
        and Vicki first meet the female-dominated Drahvins.
    Scenes from the early "space opera" episodes of the 12-part epic The Daleks' Master Plan
    The full-length first regeneration of the Doctor, from episode 4 of The Tenth Planet and from
        episode 1 of The Power of the Daleks
    Dalek production lines and Dalek chanting from Patrick Troughton's first story, The Power of the Daleks
    Model footage and special effects shots for the Dalek Civil War scenes in The Evil of the Daleks.
    A reel of death scenes from various stories that were cut by Australia's censors when they were deemed too violent
        for the time slot they were running the series in.  The lost stories thus represented are The Smugglers, The Highlanders,
        The Underwater Menace, The Macra Terror, Fury From the Deep, and The Wheel in Space.  One scene from
        Fury From the Deep is particularly chilling, where Maggie Harris is gassed by the possessed maintenance
        technicians Mr. Oak and Mr. Quill.

The video also includes interviews with fans and film collectors who have found missing episodes.

Hosted by Frazer Hines (Jamie McCrimmon in the series) and Deborah Watling (Victoria Waterfield in the series).
Executive Produced by Stephen Cole, Produced by Steve Roberts, Written and Directed by Paul Vanezis.

Produced in 1998 and released in the UK as part of the release of The Ice Warriors.  Never transmitted.
 

Serial: GG  Episode No. 147.  Title: The Underwater Menace episode 3

The earliest surviving episode starring Patrick Troughton is presented as a bonus episode alongside The Missing Years.
This is the only episode surviving from this 4-part story, which was Troughton's third overall.

The travellers are on Earth circa 1970 and have discovered that the lost city of Atlantis is alive and well, existing for
centuries under the sea.  The inhabitants have now been contacted by Professor Zaroff, a mad scientist who has told
the Atlanteans he plans to raise their city from the sea, when in reality he plans to drain the ocean into the Earth's
core, thus destroying the planet.

starring Patrick Troughton as Dr. Who, Michael Craze as Ben, Anneke Wills as Polly, and Frazer Hines as Jamie McCrimmon.
Written by Geoffrey Orme, Produced by Innes Lloyd, Directed by Julia Smith.

Originally transmitted on 28 January 1967 on BBC1.