diff --git a/src/libCom/osi/epicsStacktrace.h b/src/libCom/osi/epicsStacktrace.h
index e98d2a1b2..44c7098ab 100644
--- a/src/libCom/osi/epicsStacktrace.h
+++ b/src/libCom/osi/epicsStacktrace.h
@@ -1,3 +1,12 @@
+/* 
+ * Copyright: Stanford University / SLAC National Laboratory.
+ *
+ * EPICS BASE is distributed subject to a Software License Agreement found
+ * in file LICENSE that is included with this distribution. 
+ *
+ * Author: Till Straumann <strauman@slac.stanford.edu>, 2011
+ */ 
+
 #ifndef INC_epicsStacktrace_H
 #define INC_epicsStacktrace_H
 
diff --git a/src/libCom/osi/execinfoStacktrace.c b/src/libCom/osi/execinfoStacktrace.c
index f4693d10b..3d36511f2 100644
--- a/src/libCom/osi/execinfoStacktrace.c
+++ b/src/libCom/osi/execinfoStacktrace.c
@@ -1,3 +1,12 @@
+/* 
+ * Copyright: Stanford University / SLAC National Laboratory.
+ *
+ * EPICS BASE is distributed subject to a Software License Agreement found
+ * in file LICENSE that is included with this distribution. 
+ *
+ * Author: Till Straumann <strauman@slac.stanford.edu>, 2011
+ */ 
+
 #include "epicsStacktrace.h"
 #include "epicsThread.h"
 #include "epicsMutex.h"
diff --git a/src/libCom/osi/os/Darwin/osdStacktrace.c b/src/libCom/osi/os/Darwin/osdStacktrace.c
index 341dbec5f..c7b26c59c 100644
--- a/src/libCom/osi/os/Darwin/osdStacktrace.c
+++ b/src/libCom/osi/os/Darwin/osdStacktrace.c
@@ -1,3 +1,12 @@
+/* 
+ * Copyright: Stanford University / SLAC National Laboratory.
+ *
+ * EPICS BASE is distributed subject to a Software License Agreement found
+ * in file LICENSE that is included with this distribution. 
+ *
+ * Author: Till Straumann <strauman@slac.stanford.edu>, 2011
+ */ 
+
 /* THIS FILE IS INTENTIONALLY EMPTY
  *
  * The presence of this file prevents the build
diff --git a/src/libCom/osi/os/Linux/osdStacktrace.c b/src/libCom/osi/os/Linux/osdStacktrace.c
index 341dbec5f..c7b26c59c 100644
--- a/src/libCom/osi/os/Linux/osdStacktrace.c
+++ b/src/libCom/osi/os/Linux/osdStacktrace.c
@@ -1,3 +1,12 @@
+/* 
+ * Copyright: Stanford University / SLAC National Laboratory.
+ *
+ * EPICS BASE is distributed subject to a Software License Agreement found
+ * in file LICENSE that is included with this distribution. 
+ *
+ * Author: Till Straumann <strauman@slac.stanford.edu>, 2011
+ */ 
+
 /* THIS FILE IS INTENTIONALLY EMPTY
  *
  * The presence of this file prevents the build
diff --git a/src/libCom/osi/os/default/osdStacktrace.c b/src/libCom/osi/os/default/osdStacktrace.c
index 024ad32e8..3cb60c75d 100644
--- a/src/libCom/osi/os/default/osdStacktrace.c
+++ b/src/libCom/osi/os/default/osdStacktrace.c
@@ -1,3 +1,12 @@
+/* 
+ * Copyright: Stanford University / SLAC National Laboratory.
+ *
+ * EPICS BASE is distributed subject to a Software License Agreement found
+ * in file LICENSE that is included with this distribution. 
+ *
+ * Author: Till Straumann <strauman@slac.stanford.edu>, 2011
+ */ 
+
 #include "epicsStacktrace.h"
 
 epicsShareFunc void epicsStacktrace(void)