I am having a hard time locating the specific roll number on Federal Census records on the major websites (Ancestry.com / FamilySearch.org). I have citations written in 2017 which include the specific roll number, but when reviewing these websites now, I cannot find it anymore.
Example citation I wrote in 2017:
1900 U.S. census, Cook County, Illinois, population schedule, South Town, Chicago, Ward 6, p. 305 (stamped), enumeration district 165, sheet 8A, dwelling 95, family 148, John Smith; digital image, Ancestry.com (http://www.ancestry.com : accessed 13 September 2017); citing National Archives microfilm publication T623, roll 250.
When I go to Ancestry.com today (19 October 2019), I can only find the following data...
Year: 1900; Census Place: Chicago Ward 6, Cook, Illinois; Page: 8; Enumeration District: 0165; FHL microfilm: 1240250 Ancestry.com. 1900 United States Federal Census [database on-line]. Provo, UT, USA: Ancestry.com Operations Inc, 2004.
Original data: United States of America, Bureau of the Census. Twelfth Census of the United States, 1900. Washington, D.C.: National Archives and Records Administration, 1900. T623, 1854 rolls.
You'll notice it only notes the total number of rolls (1854), but not the specific roll number anymore.
Here is the citation offered by FamilySearch for this same record:
"United States Census, 1900," database with images FamilySearch (https://familysearch.org/ark:/61903/1:1:MSSB-MCY : accessed 19 October 2019), John Smith, Precinct 28 South Town Chicago city Ward 6, Cook, Illinois, United States; citing enumeration district (ED) 165, sheet 8A, family 148, NARA microfilm publication T623 (Washington, D.C.: National Archives and Records Administration, 1972.); FHL microfilm 1,240,250.
Has there been a citation standard change where we are no longer citing the exact roll number? If not, I cannot seem to locate it anymore, and that's troubling.