As Lewis Carroll, he wrote the definitive poem about photography. It's a bit long, so see this link:
The link refers to the following section as "Verses added later - when the wet-plate process was less common.":
First, a piece of glass he coated
With collodion, and plunged it
In a bath of lunar caustic
Carefully dissolved in water -
There he left it certain minutes.
Secondly, my Hiawatha
Made with cunning hand a mixture
Of the acid pyrro-gallic,
And of glacial-acetic,
And of alcohol and water
This developed all the picture.
Finally, he fixed each picture
With a saturate solution
Which was made of hyposulphite
Which, again, was made of soda.
(Very difficult the name is
For a metre like the present
But periphrasis has done it.)
I think the "rumors" are too numerous to discount, and the facts pretty darned obvious. I am not particularly interested in his photography anyway (especially as I don't particularly like children and have no qualms about admitting it). I do have a copy of "Through the Looking Glass" on our bed side table however, and think it's something everyone should read once a year, along with "You Can't Go Home Again" and "1984".