Can anyone find an electron micrograph showing a preganglionic
parasympathetic faxon innervating a small postganglionic axon? I have
one showing this in the bladder wall (of a rabbit, I think) but failed
to note carefully enough the origin. I MAY have found it on the
internet. However, any such micrograph (parasympathetic!) that can be
photogrphed (or scanned for a photo) would be satisfactory. The origin
is important because permission would be required to publish it (if I
choose to). Thank you.

Hi popso,

Have you tried here? 

Bristol BioMed - Image Archive
http://www.brisbio.ac.uk/

I'm afraid I don't know enough about your subject to assess the images
myself, but you can search or browse the images and see if anything
matches.

-K~

Hi,

The closest I could come to this is 

Separate urinary bladder and prostate neurons in the central nervous
system of the rat: simultaneous labeling with two
immunohistochemically distinguishable pseudorabies viruses
http://www.biomedcentral.com/1471-2202/3/8

Arborization pattern of sympathetic preganglionic axons in the rat
superior cervical and stellate ganglia
http://www.mbs.med.kyoto-u.ac.jp/pdf/32TN.pdf

Biochemical Modeling Helps Explain Complex Neural Junction in Chicken
Embryo
http://www.npaci.edu/envision/v18.1/chicken.html

EM Autoradiogram of Lizard Endplate showing labeled acetylcholine
receptors
http://www.nbb.cornell.edu/neurobio/salpeter/salpeter.html

Basal Ganglia Anatomy, Physiology and Computation 
http://marlin.life.utsa.edu/default.html

electron microscope neural synapse parasympathetic
electron microscope neuron synapse parasympathetic
electron microscope neural innervation parasympathetic

I've posted this as a comment since I'm not sure that any of these are
exactly what you need. If any of these fit the criteria you set,
please let me know and I will post it as an answer.

Regards,
bcguide-ga