diff --git a/docs/images/flex.jpg b/docs/images/flex.jpg
index ab72cc26..3f0f3157 100755
Binary files a/docs/images/flex.jpg and b/docs/images/flex.jpg differ
diff --git a/doxy/node/generators/yuidoc/tmpl/layouts/main.handlebars b/doxy/node/generators/yuidoc/tmpl/layouts/main.handlebars
index c5ef7f0d..82aa1932 100644
--- a/doxy/node/generators/yuidoc/tmpl/layouts/main.handlebars
+++ b/doxy/node/generators/yuidoc/tmpl/layouts/main.handlebars
@@ -18,6 +18,7 @@
           <p>
           The UPM API is a high level sensor library for IoT devices using MRAA. See examples <a href="https://github.com/intel-iot-devkit/upm/tree/master/examples/javascript">here</a>. 
           Back to <a href="http://iotdk.intel.com/docs/master/upm/node/"> index </a> page.
+          <br><em>SparkFun sensor images provided under <a href=https://creativecommons.org/licenses/by-nc-sa/3.0/>CC BY-NC-SA-3.0</a>.</em>
           </p>
         </div>
     </div>
diff --git a/src/flex/flex.h b/src/flex/flex.h
index 4f9c2499..fc2e391b 100644
--- a/src/flex/flex.h
+++ b/src/flex/flex.h
@@ -40,6 +40,7 @@ namespace upm {
    * @comname Flex Sensor
    * @type flexfor
    * @man sparkfun
+   * @web https://www.sparkfun.com/products/8606
    * @con analog
    *
    * @brief API for the Spectra Symbol Flex sensor
@@ -49,6 +50,10 @@ namespace upm {
    * the original Nintendo Power Glove.
    *
    * @image html flex.jpg
+   * <br><em>Flex Sensor image provided by SparkFun under
+   * <a href=https://creativecommons.org/licenses/by-nc-sa/3.0/>
+   * CC BY-NC-SA-3.0</a>.</em>
+   *
    * @snippet flex.cxx Interesting
    */
   class Flex {