05 October 2009
Page number 0
I am not certain what is going on, but this results page at Ancestry.com for Asa Landon in 1860 indicates that he is listed on census page number "0."
If you cannot see it, look in the source citation.
There is not a page 0. I just checked.
I'm not certain what is up with this, but I might just have to stop copying and pasting Ancestry.com's source citation to use as a starting point for my own citations.