The OS and assorted applications for the 1952 IBM 701 are still available from the Share foundation.
I assume that this is for the vacuum tube computer enthusiasts.
The IBM 701 OS was updated for the IBM 704 in 1954.
Some code from this OS was used in the IBM 7090 and S/370 and persist in IBM mainframes today.
However, FORTRAN and LISP were developed for the 704 in late 1953.