Could you please verify for me the difference between QuickCheck Model Digital Images Federal Census (U.S.) on page 237 and QuickCheck Model Microfilm: Population Schedules 1880-1940 on page 248 of the 3rd. edition of Evidence Explained. It seems that on page 237 Ancestry copied the image from microfilm held by NARA, hence the "citing NARA ... , roll 187." and the reference to Ancestry's website. The only difference I see between this citation and the one on page 248 is that the word citing is not used and there is no reference to a website. I take that to mean that the actual microfilm at the NARA was examined as there is no reference to a website. Even so, wouldn't it be better to show the website for NARA where someone could find the document. Also, on a related note, how does a person locate the microfilm publication number and roll number for an image.