Preamble
Following on from ArduinoBoys and others and Making your own ArduinoBoy, I was looking to get the footprint and/or EagleCAD (or KiCAD) file from Mouser’s DIN 61NC5F in order to compare it to the footprint of the 57PC5F:

There is a link to a .epw
file, 502-61NC5F-pcb-part-libraries.epw
.
.epw
files are ECAD Part Wizard files, available from RS: ECAD Part Wizard, which unfortunately requires M$ Excel. An alternative is DesignSpark’s PCB Part Library, which requires Windows (but maybe able to run in a Wineskin on OSX).
See Import-PCB-Part-Library-parts-to-EAGLE video, which shows how to automatically import into EagleCAD. However, as the video demonstrates, a login is required, meaning that you have to sign up for a service.
The Mouser product page links to FREE HIGH QUALITY PCB LIBRARIES FOR ECAD TOOLS, and the video there shows the SamacSys LibraryLoader (which is the same as the tool on the DesignSpark page).
So how can you do it manually?