diff --git a/raw/solar.lowtech.md b/raw/solar.lowtech.md
index 26d8641..7d8f9c4 100644
--- a/raw/solar.lowtech.md
+++ b/raw/solar.lowtech.md
@@ -39,7 +39,7 @@ You can find the source code for 'solar', the Pelican theme we developed [here](
 
 One of the main challenges was to reduce the overall size of the website. Particularly to try and reduce the size of each page to something less than 1MB . Since a large part of both the appeal and the weight of the magazine comes from the fact it is richly illustrated, this presented us with a particular challenge. 
 
-![Image from the blog showing 19th century telephone switchboard operators, 159.5KB](/images/international-switchboard.jpg)Image from the blog showing 19th century telephone switchboard operators, 159.5KB
+![Image from the blog showing 19th century telephone switchboard operators, 159.5KB](/images/international-switchboard.jpg)Image from the blog showing 20th century telephone switchboard operators([original source](https://commons.wikimedia.org/wiki/File:Bell_System_switchboard.jpg)), 159.5KB
 
 In order to reduce the size of the images, without diminishing their role in the design and the blog itself, we reverted to a technique called dithering: