diff --git a/.gitattributes b/.gitattributes
index e98d7ba8122586d46abd89539bc0df5df093ffc1..79cfe01927c8c09ae76786f7610fc426d44864f2 100644
--- a/.gitattributes
+++ b/.gitattributes
@@ -1,4 +1,5 @@
 * text=auto !eol
+/LICENSE.txt -text
 /Makefile -text
 callbacks/Makefile.in -text
 callbacks/configure -text
diff --git a/LICENSE.txt b/LICENSE.txt
new file mode 100644
index 0000000000000000000000000000000000000000..2ecf9ebef17749a4a8193ff0542476836ef77922
--- /dev/null
+++ b/LICENSE.txt
@@ -0,0 +1,15 @@
+The software in this directory and its subdirectories was developed
+with SBIR funding and is subject to SBIR Data Rights, as detailed
+below.
+
+SBIR DATA RIGHTS
+
+Contract No. __N00014-14-C-0197___W31P4Q-14-C-0086________.
+Contractor Name __Zephyr Software LLC_____________________.
+Address __2040 Tremont Road, Charlottesville, VA 22911____.
+Expiration of SBIR Data Rights Period __16-JUNE-2021______.
+
+The Government's rights to use, modify, reproduce, release, perform, display, or
+disclose this software are restricted by SBIR DATA RIGHTS.
+Any reproduction of the software or portions thereof marked with this legend 
+must also reproduce the markings.