Well I'll be... An older handbook lists the #94, so it seems to have been discontinued sometime before 1990.

Wratten 94: here is wavelength, nm, followed by % trasmittance:
wave trans
420 ---
430 1.2
440 4.9
450 8.5
460 8.3
470 4.7
480 1.4
490 0.3
500 ---