Boxcar Children Mysteries Series 1-50 books

A revisiting of the Classics books. The ultimate book series includes the following titles:
 
1 The Boxcar Children 1924 as Box-Car Children; reissued 1942 
2 Surprise Island 1949 
3 The Yellow House Mystery 1953 
4 Mystery Ranch 1958 
5 Mike's Mystery 1960 
6 Blue Bay Mystery 1961 
7 The Woodshed Mystery 1962 
8 The Lighthouse Mystery 1963 
9 Mountain Top Mystery 1964 
10 Schoolhouse Mystery 1965 
11 Caboose Mystery 1966 
12 Houseboat Mystery 1967 
13 Snowbound Mystery 1968 
14 Tree House Mystery 1969 
15 Bicycle Mystery 1970 
16 Mystery in the Sand 1971 
17 Mystery Behind the Wall 1973 
18 Bus Station Mystery 1974 
19 Benny Uncovers a Mystery 1976
20 Sleuth and Solve Activity Book 
21 The Deserted Library Mystery 1991 
22 The Animal Shelter Mystery 1991 
23 The Old Motel Mystery 1991 
24 The Mystery of the Hidden Painting 1992 
25 The Amusement Park Mystery 1992 
26 The Mystery of the Mixed Up Zoo 1992 
27 The Camp Out Mystery 1992 
28 The Mystery Girl 1992 
29 The Mystery Cruise 1992 
30 The Disappearing Friend Mystery 1992 
31 The Mystery of the Singing Ghost 1992 
32 The Mystery in the Snow 1993 
33 The Pizza Mystery 1993 
34 The Mystery Horse 1993 
35 The Mystery at the Dog Show 1993 
36 The Castle Mystery 1993 
37 The Mystery of the Lost Village 1993 
38 The Mystery of the Purple Pool 1994
39 The Ghost Ship Mystery 1994 
40 The Canoe Trip Mystery 1994 
41 The Mystery of the Hidden Beach 1994 
42 The Mystery of the Missing Cat 1994 
43 The Mystery on Stage 1994 
44 The Dinosaur Mystery 1995 
45 The Mystery of the Stolen Music 1995 
46 The Chocolate Sundae Mystery 1995 
47 The Mystery of the Hot Air Balloon 1995 
48 The Mystery Bookstore 1995 
49 The Mystery of the Stolen Boxcar 1995 
50 The Mystery in the Cave 1996