Cross section scheme of Eastman Color Type 5248. Scource: Hanson, W. T., Jr.; Kisner, W. I. (1953): Improved Color Films for Color Motion-Picture Production. In: Journal SMPTE, Vol. 61, Dec. 1953, p. 699.
Cross section scheme of Eastman Color Negative, Type 5250. Scource: Dundon, Merle L./Zwick, Daan M. (1959): A High Speed Color Negative Film. In: JSMPTE Vol 68, p. 736.
cross section scheme of Ektachrome Type 5257 (and 5258). Scource: Groet, N.H./Murray, T.J./Osborne, C.E. (1960): Two High-Speed Color Films and a Reversal Print Film for Motion Picture Use. In: JSMPTE Vol. 69, p. 816.