Dan Efran's LEGO MOC: 
damaged Apollo XIII service module
created April 13, 2004. posted April 13, 2005.
Original content Copyright (c) 2004 by Dan Efran
But NASA content is from NASA.

Images 'apollo13-dan-lego-1.jpg' and 'apollo13-dan-lego-2.jpg' 
depict my LEGO model, created April 13, 2004, 
based on the generic, non-damaged service module from 
set 7468-1 (Saturn V Moon Mission). 

Image 'apollo13-nasa-photo.jpg' is the actual craft, photographed 
from the command module, in space. This is a NASA photo, 
as printed in the LEGO instruction booklet for set 7468-1.

For more pictures of the real thing, see, for example:

http://nssdc.gsfc.nasa.gov/planetary/lunar/ap13acc.html