What is the length of time in years the longest running book series has continued?
Simon and Schuster Crossword Puzzle Book
20 years
30 years
109 years
5 years
14 years
7 years
20 years
115 years
109 years
8 years
61 years
6 years
66 years
115 years
30 years
67 years
4 years
109 years
20 years
109
175 years
61 years
66 years
20 years
115 years
5 years
14 years
7 years
109
67 years
30 years
170 years
91 years
109
135 years
20 years
109
175
135
109 years
20 years
109
175
20-year
135
50 years
30 years
61 years
5
115
66 years
170
115 years
109
175
20
135
67
67 years
25 years
5
115
20-year
7
20 years
4
170
6
20
117
109
175
5
135
14
109 Years
67
7
58
4
6
115
20
20 years
30 years
170
5
58 years
91
14
66
109 years
109
61
175
20-year
135
7
175 years
4
67
6
20
117
117 years
5
115
14
109 Years
170
7
58
115 Years
61 years
66
4
6
109
61
175
66 years
20
135
17
30 years
67
115 years
5
91
14
170 years
115
20-year
7
66 Years
67 years
50
4
170
6
20
117
66
17
2 decades
109
61
91 years
175
5
135
135 years
14
30 years
67
61 Years
67 Years
7
58
50
115 Years
4
142
6
115
20
171
17
170
5
14
8
2 decades
109
61
175
135
7
50
4
30 years
20-century
6
109 Years
20
117
40-year
91
66
30 Years
17
5
274
171
14
8
67
170
25
7