Posted By Herbert Kraus
I tried a Google search which furnished me two sites that were helpful to some extent:
http://www.astro-tom.com/technical_data/eyepiece_specs.htm contains data for many eyepieces. However,field stop diameters are given only for eyepieces made by Clave, Edmund Scientific/RKE, and TeleVue (which still seems to be the only manufacturer from which this information is readily obtainable anyway).
http://www.petersonengineering.com/spreadsheets/Eyepieces-for-14_inch_SCT.htm does have measured field stop diameters for substantially all of the eyepieces it lists, including Meade and Celestron models, although its list seems somewhat more limited and may be somewhat out of date.