(Created by Wesley VanLandschoot)

#1: Mushroom Kingdom - Frog Coin
Jump on Toad's head when you get to the Mushroom Castle the FIRST time. As Toad gets to the door to the throne room, jump to reveal a platform. From the platform you can get the box.

#2: Mushroom Kingdom - Flower
Go down the stairs of the Item Shop to the basement. Some dude will give you a little lesson in finding hidden boxes. Jump to get the box

#3: Mushroom Kingdom - Flower
After telling you about hidden Treasure Boxes, the man in the Item Shop basement will talk a walk. Jump on his head. When he reaches the Right corner, jump to get the Box.

#4: Bandit's Way - Kerokero Cola
Stand atop the spinning flower. Jump up and slightly to the right to find the Box. Make sure that you get this box!!

#5: Rose Town - Frog Coin
Jump on the bookshelf behind the counter in the Item Shop to reach this Box.

#6: Rose Town - Frog Coin
After hopping from the man's head to reach his house on the hill, go upstairs. The hidden Box is over the bed. Next, step on the switch to make the front steps appear.

#7: Forest Maze - Kerokero Cola
Go to the left side of the very first section of the Forest Maze. Jump to reveal the Box.

#8: Forest Maze - Frog Coin
Ffirst go to the underground section, then leap on a trampoline to get topside once more. Go left and jump to reveal the box.

#9: Forest Maze - Kerokero Cola
When you reach the area with Wigglers crawling out of seven stumps, hop down the stump on the far left. Once in the cavern, go to the far corner and leap to reveal the Box.

#10: Forest Maze - Flower
Hop into the far right stump, elude the belligerent Buzzers and angry Adamitas, then stand in the patch of light and then jump.

#11: Forest Maze - Empty (What is up with this? Got any answers E- mail me at meem95@hotmail.com)
In the section with the seven stumps, jump down the left stump in the second row. Jump in the corner directly behind the trampoline the reveal the, it's empty!

#12: Forest Maze - Red Essence
Before exiting the section with the hollow stump and the Save Block, head right and jump to reveal a Treasure Box.

#13: Pipe Vault - Frog Coin
Hop down the second of six pipes sprouting Piranha Plants. Jump at the end of the row of blocks to make a platform appear. Walk to the second block and jump to reveal the Box.

#14: Pipe Vault - Frog Coin
Another hidden Box hovers two block beyond the first one. To get the Frog Coin below, press Right and hold the Y Button to run, then press down the slide.

#15: Yo'ster Isle - Frog Coin

The Treasure Box floats slightly to the left of the Save Box.

#16: Booster Pass - Flower
In the very first section, stand on the plant over the cave entrance and jump to reveal the box.

#17: Booster Pass - Rock Candy
There are two exits from the first section, on through a cavern and the other over the hill. Just to the right of the above-ground exit, jump to reveal this Box.

#18: Booster Tower - Frog Coin
Evade the Snifits while climbing the first flight of stairs. A Box floats over the landing. Simply stand on the dark square and jump. Try to avoid the Snifits and save your HP for later.

#19: Booster Tower - Frog Coin
After the Thwomp see-saws you to the stairwell with the parachuting Spookums, go to the far left corner to find this Box.

#20: Booster Tower - Goodie Bag
At the top of Booster Tower you'll find yourself in a room with giant ledges projecting from the wall and a Save Block. Climb the ledges until you can hop on the top of a visible box, then jump again to reveal the hidden box.

#21: Booster Tower - Mushroom
Just before leaving the room with the hidden Box floating over a visible one, go to the right and jump to find another Box.

#22: Marrymore - Frog Coin
Spend the night in the regular room in the Inn. When you wake up, climb the bookshelf and jump to get the hidden box.

#23: Sunken Ship - Flower
After kiling King Calamari, Mario will enter a room with a Mario clone. The box is in the middle of the room. You get the clone in the middle of the room, then jump on his head. A platform will come up and then you jump on the platform to get the box.

#24: Land's End - Flower
Reach the moving platform by firing yourself out of the first pot cannon you reach. Stand on the far corner of the platform and leap away when the platform reaches its highest point.

#25: Land's End - Flower
In the second stage, stand between the cannon and the plateau and jump to activate a hidden platform. Crawl back into the cannon and shoot yourself so you can get to the platform. Once you've landed, jump up to reveal the box.

#26: Land's End - Frog Coin
Just before you get to the Sky Bridge, jump between the two stationary purple flowers to reveal the Treasure Box.

#27: Land's End - Frog Coin
Hop into the cave beneath the Sky Bridge and follow the secret passage to Kero Sewers. In the first section, go to the corner in the back. Get the heck away from the Chow and leap to reveal the Box.

#28: Belome's Temple - Frog Coin
After getting your fortune told, a gate will open and admit you to a passageway with two visible boxes. Leap from the wall onto the Box on the left, then jump straight up.

#29: Belome's Temple - Frog Coin
After opening the first box, descend down the stairs. Stand in the corner to the right, then jump.

#30: Monstro Town - Flower
On your way out (The door to the far right), stand between the flowering bush and the wall and jump to reveal the Box.

#31: Bean Valley - Rock Candy
After entering the valley from Monstro Town, hop down the pipe on the right. When you pop out, go to the red hill on the lef and jump to find the box.

#32: Bean Valley - Kerokero Cola
In the area with the five Piranha Plants growing out of the pipes, take out the Piranha Plant on the lower right and climb down its pipe. Go to the far side of the room and jump to find the box.

#33: Bean Valley - Red Essence
Defeat the Piranha Plant on the far right and hop into the pipe. Walk right. The box is halfway between the trampoline and the yellow stairs.

#34: Nimbus Land - Frog Coin
Enter the Item Shop and jump up to the back, then jump toward the shopkeeper to make a the box appear.

#35: Nimbus Land - Frog Coin
Enter Nimbus Castle and head for the grand hallway with the three doorways. Go to the far left side and say "Hi" to the bird, then stand in the corner and jump to find the Box.

#36: Nimbus Land - Frog Coin
After killing Birdo, head out the back door to the room where King Nimbus is being held prisoner. Pause on your way to jump on the Treasure Box hovering over the lower passageway. The Box over it contains a Frog Coin.

#37: Nimbus Land - Frog Coin
Starting in the hallway with the three doors, enter the door on the left. Go down the second set of stairs. Just before you enter the room with the Save Block, a hidden Box hovers overhead.

#38: Nimbus Land - Frog Coin
The fifth Frog Coin in Nimbus Land floats in space! After finding the hidden Treasure Box behind the third door on the left, walk straight out into the void. When you can't go any farther, leap to reveal another one.

#39: Smithy Factory - Mushroom
Just after getting out of the area with the multiple screws and evading the Ameboids, you'll come across the rest stop with a Save Block. Just to its left is a hidden box.

I hope this is all of them. I went through the game one more time and I think I found them all.

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