Source Armand Borel (Wikipedia)
Additional Source Brouwer Fixed-Point Theorem (Wikipedia)First proofs subsection
Source Brown's representability theorem (Wikipedia)
Source Wikipedia: Edgar H. Brown
Source Edwin Spanier (MacTutor)
Source Eilenberg-Ganea conjecture (Wikipedia)
Source Eilenberg Zilber theorem (Wikipedia)
Source Wolfram MathWorld: Freudenthal Suspension
Theorem
Source National Academy of Sciences: George W. Whitehead Jr. 1918-2004, A Biographical Memoir
Source Guy Hirsch (Wikipedia)
Source Wikipedia: Hans Freudenthal
Source Henri Cartan (Wikipedia)
Source Hermann Künneth (Wikipedia)
Source Hurewicz theorem, Wikipedia
Source Wikipedia: J. H. C. Whitehead
Source Jean Leray, Wikipedia
Source MacTutor biography of Jean-Pierre Serre, St Andrews
Source Princeton University Department of Mathematics: John C. Moore
Source Professor John Hubbuck (University of Aberdeen)
Source Leopold Vietoris, Biography (MacTutor History of Mathematics)
Source Lev Pontryagin (Wikipedia)
Source Max Karoubi (Wikipedia)
Source Mayer-Vietoris Theorem (Wikipedia)
Source Mikhail Mikhailovich Postnikov (MacTutor)
Source MacTutor History of Mathematics: Norman Steenrod
Source Homology sphere (Wikipedia)
Source Riemann-Hurwitz formula, Wikipedia
Source Ruth Lawrence (Wikipedia)
Source Sergei Novikov (mathematician) (Wikipedia)
Source Shaun Wylie (MacTutor)
Source Wikipedia: Solomon Lefschetz
Source Vladimir Rokhlin (Wikipedia)
Source Vladimir Voevodsky (Wikipedia)
Source Whitehead Conjecture (Wikipedia)
Source MacTutor History of Mathematics: William Browder
Source William Richard Maximilian Hugo Threlfall (MacTutor)
Source Witold Hurewicz (Wikipedia)