Risto Räppääjä is a 11-book series with 11 primary works first released in 1997 with contributions by Sinikka Nopola and Tiina Nopola.
1997 • 1 Reader • 96 pages • 4
2001 • 1 Reader • 128 pages • 3
2002 • 1 Reader • 104 pages • 3
2004 • 1 Reader • 94 pages • 3
2012 • 1 Reader • 120 pages • 3
2013 • 1 Reader • 116 pages • 4
2014 • 1 Reader • 109 pages • 4