I hope people have noticed the new pages starting
http://www.citrusvariety.ucr.edu/citrus/index.html .
I've always thought there should be photos of every variety in their collection, and once I even asked to be employed to do the job!
I was particularly interested in the Citrus Relatives page at
http://www.citrusvariety.ucr.edu/citrus/citrus.html .
This had a much-repeated error about Eremocitrus being very cold-hardy, so I e-mailed the web-master and they removed the reference.
Some of the photos on the web-site are fairly old and were used in the second edition of the Citrus Industry, vol.1. but not in colour.
Riverside sent me higher definition copies of a few of these, and I played about with Photoshop to enhance them. A couple of the results can be seen on my updated webpage
Citrus warburgiana