John Vandenberg, President of Wikimedia Australia, has created a book collecting up all the materials on the "2012 Australian Paralympic Team". This is available free online as a PDF Download, or an ODT Word-processor File (a Printed Book can also be purchased). Wikimedia Australia's volunteers took on the task of documenting the 2012 Australian Paralympic Team and this book is one of the results of the effort of many people (who are listed in the book).
This Wikipedia book (or Wikibook) is created from a collection of Wikipedia articles and each time someone requests a book it is generated afresh from the latest version of the Wikipedia.
One problem is that Wikibooks can be large. The Paralympic book is about 90 Mb. The HTML format used for the web is usually very efficient in the use of file space and so I examined the book file to see what the problem was.
I downloaded the ODT version of the book and unzipped it to examine the source files. The images take up about 90% of the space. There are then hundreds of small images, which are flags of countries and clip art of medals. There are a few milt-megabyte images, which are photographs of the athletes.
There appears to be a problem with the book generating tool, resulting in duplicated images. As an example, each time the image of a medal is in a Wikipedia entry, a new copy of the same medal image is included in the book. But only one copy of each image should be needed.
Also the photographs of athletes are included in the book at high resolution. This is useful for high quality printing, but wastes space for on screen viewing. An option for using smaller versions of the images would be useful.
Perhaps Wiki-HQ could make some changes to the book generating software. Removing the duplicated images would seed up the book creation process on the server and download time, as well as reduce the file size for the user. As an example, image optimization should reduce the Paralympic book from 90 Mbytes to less than 15 Mbytes.