diff --git a/notes.txt b/old/notes.txt similarity index 100% rename from notes.txt rename to old/notes.txt diff --git a/racket-extended-for-implementing-typed-langs.rkt b/old/racket-extended-for-implementing-typed-langs.rkt similarity index 100% rename from racket-extended-for-implementing-typed-langs.rkt rename to old/racket-extended-for-implementing-typed-langs.rkt diff --git a/stlc+define+cons-tests.rkt b/old/stlc+define+cons-tests.rkt similarity index 100% rename from stlc+define+cons-tests.rkt rename to old/stlc+define+cons-tests.rkt diff --git a/stlc+define+cons-via-racket-extended-tests.rkt b/old/stlc+define+cons-via-racket-extended-tests.rkt similarity index 100% rename from stlc+define+cons-via-racket-extended-tests.rkt rename to old/stlc+define+cons-via-racket-extended-tests.rkt diff --git a/stlc+define+cons-via-racket-extended.rkt b/old/stlc+define+cons-via-racket-extended.rkt similarity index 100% rename from stlc+define+cons-via-racket-extended.rkt rename to old/stlc+define+cons-via-racket-extended.rkt diff --git a/stlc+define+cons.rkt b/old/stlc+define+cons.rkt similarity index 100% rename from stlc+define+cons.rkt rename to old/stlc+define+cons.rkt diff --git a/stlc-tests.rkt b/old/stlc-tests.rkt similarity index 100% rename from stlc-tests.rkt rename to old/stlc-tests.rkt diff --git a/stlc-via-racket-extended.rkt b/old/stlc-via-racket-extended.rkt similarity index 100% rename from stlc-via-racket-extended.rkt rename to old/stlc-via-racket-extended.rkt diff --git a/stlc.rkt b/old/stlc.rkt similarity index 100% rename from stlc.rkt rename to old/stlc.rkt diff --git a/stx-utils.rkt b/old/stx-utils.rkt similarity index 100% rename from stx-utils.rkt rename to old/stx-utils.rkt diff --git a/sysf-tests.rkt b/old/sysf-tests.rkt similarity index 100% rename from sysf-tests.rkt rename to old/sysf-tests.rkt diff --git a/sysf.rkt b/old/sysf.rkt similarity index 100% rename from sysf.rkt rename to old/sysf.rkt diff --git a/typecheck.rkt b/old/typecheck.rkt similarity index 100% rename from typecheck.rkt rename to old/typecheck.rkt