Planetary Nebulae Gallery
- A data table with links to images.
- http://home.austarnet.com.au/mhorn/pneb.html

ARVAL Catalog of Bright Planetary Nebulas
- A text table, with name, size, magnitude, area, NGC number, type, RA, dec., and visual quality.
- http://www.oarval.org/PNeb.htm

Variability of Planetary Nebula Central Stars
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- http://www.astro.psu.edu/users/rbc/res_puls.html

Planetary Nebulae
- A short discussion, part of a web page on plasmas.
- http://fusedweb.pppl.gov/CPEP/Chart_Pages/5.Plasmas/Nebula/Planetary.html

Planetary Nebula Sampler
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- http://www.noao.edu/jacoby/pn_gallery.html