Year
For the first image above, this field would be indexed as: 1981
For the second image above, this field would be indexed as: 1986. (No death year was recorded in the obituary, but a published date was handwritten on it. Although the year had only two digits, there is a date of 1943 in the obituary. Therefore, the first two digits of the year can be determined to be 19.)
For the third image above, this field would be indexed as: 1912. (Although the year on the card has only two digits, the first two digits can be determined to be 19 since the project covers 1850–1991.)
