History of FORTRAN from WikipediA
The FORTRAN Programming Language
(Historical perspectives & sample programs from U. Michigan)
FORTRAN Programming
("An open cooperative practical guide" from
ibiblio.org)
FORTRAN
77 Tutorial
(A nice little introduction from Norway)
Fortran 77 Language Reference
in HTML
from Obliquity
Fortran 77 Language Reference
(2.7 MB PDF) from Sun
Fortran 95 Language Reference (5 MB PDF) from Lahey
The gnu g77 & gfortran compilers
User's
Guide to F2PY
(a python wrapper
for FORTRAN)