Thanks to Jorg, our resident Star Trek guru for this info:
STAR TREK: TNG “DATA DISTRESSED STARFLEET JACKET”
This uniform was worn by Data in "The most toys" when Kivas Fajo dissolves it so that Data would wear his costume.
STAR TREK: VOY “DISTRESSED ENSIGN KIM STARFLEET UNIFORM”
This uniform was worn by Kim in "Scorpion I", the wound being caused by Species 8472.
STAR TREK: TNG “LT. RICHARD CASTILLO” FROM “YESTERDAY’S ENTERPRISE”
The shirt is definitely not part of the costume because in "Yesterday's Enterprise", none of the crewmembers of the Enterprise-C wore a turtleneck shirt under their maroon uniforms. By 2344, those shirts were no longer part of the uniform.
STAR TREK: DS9 “LT. BASHIR STARFLEET DRESS UNIFORM”
Worn by Bashir in "Rejoined".
STAR TREK: “24TH CENTURY DERMAL REGENERATOR”
See more re-uses of this prop here at ex-astris were It's a wrap! got the appearances from. Giving credit would be nice one of these days...
STAR TREK: X-LARGE CONSOLE DOME
Ferengi domes with such gold, blue and red trimmings were never seen in TNG but are from Nunk's Ferengi Marauder in "Inside Man" instead.
STAR TREK: ENT “ENSIGN MAYWEATHER COLD WEATHER COSTUME” FROM “THE SEVENTH”
While the costume was created for "The seventh" it took two more years till it was seen completely in "Terra Prime". The breathing mask is from the latter episode as well.
STAR TREK: TNG “MEDICAL SCANNER”
This prop was never seen in TNG but only looks similar to the medical scanner at the top of thisInstead, this is an engineering tool created for Voyager and seen in such episodes as "Body and soul", "One small step", "Memorial", "Collective", "Good shepherd", "Infinite regress", "Nightingale" and "Renaissance Man" and was never seen used as a medical device.
STAR TREK: TNG “ADMIRAL STARFLEET UNIFORM”
Female Admiral uniforms like this one were worn by Admirals Shanti, Brand, Rossa and Brackett in TNG Seasons 4+5.
STAR TREK: VOY “CHAKOTAY STARFLEET DRESS UNIFORM"
Worn by Chakotay in "Course: Oblivion".
STAR TREK: DS9 “MAIHAR’DU COSTUME” FROM “FERENGI LOVE SONGS”
Also seen in "The emperor's new cloak" and "The dogs of war".
STAR TREK: “24TH CENTURY MEDICAL DEVICE”
Never seen on DS9. This was seen in "Message in a bottle" aboard the USS Prometheus.
STAR TREK: DS9 “CARDASSIAN CHILD COSTUME” FROM “TRIBUNAL” - FEMALE
Incorrect. As can be seen here, the three Cardassian children in "Tribunal" wore completely different outfits. This is instead the costume worn by Gul Madred's daughter Jil Orra in the TNG episode "Chain of command II".
STAR TREK: DS9 “TRILL COSTUME” FROM “EQUILIBRIUM” - MALE
Worn by Nick Dimitri as a Trill guard in a flashback, see here.
STAR TREK: VOY “THE DOCTOR STUNT COSTUME” FROM “LIVING WITNESS”
Wrong. J.R. Quinonez is not a stunt-man but Robert Picardo's stand-in and an occasional extra (see his page here at Memory Alpha). In some scenes, when more then one Doctor or the Doctor and Lewis Zimmerman were seen at the same time, he doubled for Picardo. This costume is not from "Living witness", as the Doctor only wore his regular uniform (and the evil android Doctor wore a slightly modified Starfleet uniform) and never changed costume on the Nyrian-Vaskan homeworld. This costume is worn by one of the many EMHs that have to work as dilithium miners seen at the very end of "Author, author", when several EMHs were seen on screen at the same time, so it was necessary for Quinonez to double Picardo.
STAR TREK: VOY “ABADDON COSTUME” FROM “ALICE”
Many pieces of this costume are missing, the long fur coat, the large ring around the collar, the leather-brestbelt-thingy with the metal pendant...
IAW needs to hire Jorg. Then there descriptiosn would be spot on. This is best expressed by Phillip from the Star Trek Prop, Costume and Auction Forum:
We are the Jorg. Lower your shields and surrender your ships (models). We will add your biological (costume) and technological (prop) distinctiveness to our own. Your culture will adapt to service us (collectors).