diff --git a/Include/intobject.h b/Include/intobject.h
new file mode 100644
index 0000000..9a5f501
--- /dev/null
+++ b/Include/intobject.h
@@ -0,0 +1,48 @@
+/* Integer object interface */
+
+/*
+123456789-123456789-123456789-123456789-123456789-123456789-123456789-12
+
+intobject represents a (long) integer.  This is an immutable object;
+an integer cannot change its value after creation.
+
+There are functions to create new integer objects, to test an object
+for integer-ness, and to get the integer value.  The latter functions
+returns -1 and sets errno to EBADF if the object is not an intobject.
+None of the functions should be applied to nil objects.
+
+The type intobject is (unfortunately) exposed bere so we can declare
+TrueObject and FalseObject below; don't use this.
+*/
+
+typedef struct {
+	OB_HEAD
+	long ob_ival;
+} intobject;
+
+extern typeobject Inttype;
+
+#define is_intobject(op) ((op)->ob_type == &Inttype)
+
+extern object *newintobject PROTO((long));
+extern long getintvalue PROTO((object *));
+
+
+/*
+123456789-123456789-123456789-123456789-123456789-123456789-123456789-12
+
+False and True are special intobjects used by Boolean expressions.
+All values of type Boolean must point to either of these; but in
+contexts where integers are required they are integers (valued 0 and 1).
+Hope these macros don't conflict with other people's.
+
+Don't forget to apply INCREF() when returning True or False!!!
+*/
+
+extern intobject FalseObject, TrueObject; /* Don't use these directly */
+
+#define False ((object *) &FalseObject)
+#define True ((object *) &TrueObject)
+
+/* Macro, trading safety for speed */
+#define GETINTVALUE(op) ((op)->ob_ival)