Timeline for all types of items produced by
Lill, Ken

Year	Items
1981	1
1982	2
1983	1
1984	8
1987	1
1988	1

14 items with a valid date were considered for this timeline (45.16% of the total)
17 items with an invalid date.

Help us in our quest to find exact dates for:

198?: 12 items.
19??: 5 items.