D. Sperber was a Human Starfleet officer in the 22nd century.

In January of 2155, this individual was listed as a PAO officer on directory placards at the Fleet Operations Center, Sol Sector. They had an office located in room #4212 (Starfleet directory) and/or an office located in room #3602 (United Earth directory). (ENT: "Demons", directories)

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