Celebratio Mathematica

S. Ei­len­berg and S. MacLane: “Gen­er­al the­ory of nat­ur­al equi­val­ences,” Trans. Am. Math. Soc. 58 : 2 (September 1945), pp. 231–​294. MR 0013131 Zbl 0061.​09204 article

H. Bass, H. Cartan, P. Freyd, A. Heller, and S. Mac Lane: “Samuel Ei­len­berg (1913–1998),” No­tices Am. Math. Soc. 45 : 10 (1998), pp. 1344–​1352. MR 1646820 Zbl 0908.​01023 article

H. Bass, H. Cartan, P. Freyd, A. Heller, and S. MacLane: “Samuel Ei­len­berg: 1913–1998,” Bio­graph­ic­al Mem­oirs 79 (2000). article

S. Mac Lane: “Samuel Ei­len­berg and cat­egor­ies,” pp. 127–​131 in Cat­egory the­ory 1999 (Coim­bra, Por­tugal, 13–17 Ju­ly 1999), published as J. Pure Ap­pl. Al­gebra 168 : 2–​3. Issue edi­ted by J. Adamek, P. T. John­stone, and M. Sobral. 2002. MR 1887153 Zbl 0992.​18001 incollection