Samantha Berger is an author who co-wrote the 1999 children's biography Meet Jim Henson. She has written Sesame Street books as Sara Berger and authored six Muppet books, under the pen name Martha T. Ottersley.
Berger has written many children's books, including Martha Doesn't Say No and Martha Doesn't Share (featuring the otter Martha, and source of her Muppet pen name). She wrote Crankenstein and A Crankenstein Valentine and has narrated children's audiobooks (by herself and other authors). She also wrote an episode of the Nickelodeon series TUFF Puppy.
- Meet Jim Henson (1999, with Susan Canizares)
- Elmo Can Quack Like a Duck (2007, as Sara Berger)
- Super Grover to the Rescue! (2008, as Sara Berger)
- Green and Bear It (2012, as Martha T. Ottersley)
- Kermit's Costume Caper (2012, as Martha T. Ottersley)
- The Twelve Days of a Muppet Christmas (and a Chicken in a Pine Tree) (2012, as Martha T. Ottersley)
- For the Love of Piggy (2013, as Martha T. Ottersley)
- Easter Eggstravaganza! (2013, as Martha T. Ottersley)
- Fozzie's Funny Business (2013, as Martha T. Ottersley)