Finding coins getting more difficult

Now that I only have a few holes left to fill in my Jefferson Nickel Dansco, I'm thinking that finding them is going to take awhile.  My goal is to go through a million nickels - hopefully I will have found them all before that happens.

7 rolls of nickels

1946
1954-D

14 rolls of pennies

1941-D
1958-D
2001 Canada 1 Cent
96 pre-1982 coppers