LittleFilm.org LAB SERVICES
I'd call one of these places and ask them.
Alternatively, you could project the film on a clean bright screen and photograph the image. I cannot remember if one can pause an 8mm movie for very long before it starts melting, so setup the still camera ahead of time and make sure the shutter exceeds the frame rate of the projector.
Or have Costco convert the 8mm to DVD and get a screen grab after the conversion.
Or, using a flat bed film scanner, scan the length of film that has the desired frame. You may just get enough bits to make a 4x5 or 3x5 print of recognizable quality.
M