MTH: Magic Tree House
| Series | Title | YL | Words |
| MTH #1 | #001 Dinosaurs Before Dark | 2.4-3.0 | 4,750 |
| MTH #2 | #002 Knight at Dawn, The | 2.4-3.0 | 5,218 |
| MTH #3 | #003 Mummies in the Morning | 2.4-3.0 | 5,110 |
| MTH #4 | #004 Pirates Past Noon | 2.4-3.0 | 5,270 |
| MTH #5 | #005 Night of the Ninjas | 2.4-3.0 | 5,260 |
| MTH #6 | #006 Afternoon on the Amazon | 2.4-3.0 | 4,787 |
| MTH #7 | #007 Sunset of the Sabertooth | 2.4-3.0 | 4,946 |
| MTH #8 | #008 Midnight on the Moon | 2.4-3.0 | 5,660 |
| MTH #9 | #009 Dolphins at Daybreak | 2.4-3.0 | 4,761 |
| MTH #10 | #010 Ghost Town at Sundown | 2.4-3.0 | 6,147 |
| MTH #11 | #011 Lions at Lunchtime | 2.4-3.0 | 5,181 |
| MTH #12 | #012 Polar Bears Past Bedtime | 2.4-3.0 | 5,659 |
| MTH #13 | #013 Vacation Under the Volcano | 2.4-3.0 | 5,821 |
| MTH #14 | #014 Day of the Dragon King | 2.4-3.0 | 5,318 |
| MTH #15 | #015 Viking Ships at Sunrise | 2.4-3.0 | 5,453 |
| MTH #16 | #016 Hour of the Olympics | 2.4-3.0 | 5,078 |
| MTH #17 | #017 Tonight on the Titanic | 2.4-3.0 | 5,137 |
| MTH #18 | #018 Buffalo Before Breakfast | 2.4-3.0 | 5,172 |
| MTH #19 | #019 Tigers at Twilight | 2.4-3.0 | 5,925 |
| MTH #20 | #020 Dingoes at Dinnertime | 2.4-3.0 | 5,154 |
| MTH #21 | #021 Civil War on Sunday | 2.4-3.0 | 5,755 |
| MTH #22 | #022 Revolutionary War on Wednesday | 2.4-3.0 | 4,989 |
| MTH #23 | #023 Twister on Tuesday | 2.4-3.0 | 5,046 |
| MTH #24 | #024 Earthquake in the Early Morning | 2.4-3.0 | 5,552 |
| MTH #25 | #025 Stage Fright on a Summer Night | 2.4-3.0 | 6,117 |
| MTH #26 | #026 Good Morning, Gorillas | 2.4-3.0 | 5,847 |
| MTH #27 | #027 Thanksgiving on Thursday | 2.4-3.0 | 6,001 |
| MTH #28 | #028 High Tide in Hawaii | 2.4-3.0 | 5,965 |
| MTH #29 | #029 Christmas in Camelot | 2.6-3.2 | 11,092 |
| MTH #30 | #030 Haunted Castle on Hallow's Eve | 2.6-3.2 | 10,737 |
| MTH #31 | #031 Summer of the Sea Serpent | 2.6-3.2 | 10,810 |
| MTH #32 | #032 Winter of the Ice Wizard | 2.6-3.2 | 10,876 |
| MTH #33 | #033 Carnival at Candlelight: A Morgan Mystery | 2.6-3.2 | 11,833 |
| MTH #34 | #034 Season of the Sandstorms | 2.6-3.2 | 11,486 |
| MTH #35 | #035 Night of the New Magicians | 2.6-3.2 | 11,651 |
| MTH #36 | #036 Blizzard of the Blue Moon | 2.6-3.2 | 11,725 |
| MTH #37 | #037 Dragon of the Red Dawn | 2.6-3.2 | 11,273 |
| MTH #38 | #038 Monday with a Mad Genius | 2.6-3.2 | 12,609 |
| MTH #39 | #039 Dark Day in the Deep Sea | 2.6-3.2 | 11,247 |
| MTH #40 | #040 Eve of the Emperor Penguin | 2.6-3.2 | 11,986 |
| MTH #41 | #041 Moonlight on the Magic Flute | 2.6-3.2 | 11,158 |
| MTH #42 | #042 Good Night for Ghosts, A | 2.6-3.2 | 12,336 |
| MTH #43 | #043 Leprechaun in Late Winter | 2.6-3.2 | 13,376 |
| MTH #44 | #044 Ghost Tale for Christmas Time, A | 2.6-3.2 | 13,479 |
| MTH #45 | #045 Crazy Day with Cobras | 2.6-3.2 | 13,469 |
| MTH #46 | #046 Dogs in the Dead of Night | 2.6-3.2 | 13,792 |
| MTH #47 | #047 Abe Lincoln At Last | 2.6-3.2 | 13,166 |
| MTH #48 | #048 Perfect Time for Pandas, A | 2.6-3.2 | 13,819 |
| MTH #49 | #049 Stallion by Starlight | 2.6-3.2 | 13,771 |
| MTH #50 | #050 Hurry Up, Houdini! | 2.6-3.2 | 14,112 |
| MTH #51 | #051 High Time for Heroes | 2.6-3.2 | 15,045 |
| MTH #52 | #052 Soccer on Sunday | 2.6-3.2 | 14,029 |
| MTH #53 | #053 Shadow of the Shark | 2.6-3.2 | 15,446 |
| MTH #54 | #054 Balto of the Blue Dawn | 2.6-3.2 | 13,269 |
| MTH #55 | #055 Night of the Ninth Dragon | 2.6-3.2 | 13,525 |