Two compilations of rare and previously unissued material have also been released as Never Before and Another Dimension.

This material comes from the Marlene Dietrich Collection Berlin, which holds all unissued material related to the television special as part of its collection.

In 1988, the British record producer, Alan Bates, purchased the catalog outright, and reissued all of it, as well as previously unissued material.

In addition, originally unissued material from these dates was made available on Toshiba's 1600 series (20-bit 88.2 kHz CDs).

These CDs make available originally unissued material from the sessions from the 1500 series.

The disks are available individually, including a two-CD set with previously unissued material.

It contains nine CD's of rare and unissued material, including remarkable live performances and interviews.

Ultimately, four volumes of the A Legendary Performer series were issued over the next decade, with increasing amounts of previously unissued material.

In return for this concession, Laff was enabled to release previously unissued material, recorded between 1968 and 1973, at will.

Box set collection containing all Warner Bros. albums plus a bonus disc of previously unissued material from 1973 to 1992.