Hi James,
It's likely that Andy Mitchell's excellent content on his luftwaffedata.co.uk site has already answered your question.
As Chris mentioned, you can find additional context and pictorial coverage of the aircraft and people involved in Me 262 recon units in these books:
- "Me 262 Bomber and Reconnaissance Units" by Robert Forsyth and Eddie Creek, Osprey, 2012, ISBN 9781849087490, 96 pages.
Fairly detailed description of the formation and operations of the Me 262 recon units, lists of their known bases, plus decent pictorial coverage and 9 color profiles of the Me 262 A-1a/U3 variant.
- "Strahlaufklärer Messerschmitt Me 262: Die Geschichte der Nahaufklärungsgruppe 6" by Manfred Boehme, VDM Heinz Nickel, 2000, ISBN 3925480420, 111 pages.
Copies of many original documents, descriptions & drawings of Me 262 recon variants, good photographic coverage (some in color), a list of all members of NAGr 6, as well as the Werknummern of Me 262s used in the reconnaissance role.
Hope that helps,
Leon Venter