An unattributed image from the Harvard online Herbaria collections.  It's flawless obviously, and that one little seed at bottom right somehow heart-rending.

As they date back only to 1969, the images in the Oxford Book of Food Plants lack the age they require to really move Inflammammal.  But this's a fine, fine watermelon; if I mistakenly believed this image to be 100 years older it'd probably make me cry a little.  Silly business, nostalgia!

These pears have nothing to be ashamed about either (same source):