If you are out and about and pop into a charity shop, could you please check the children's section for any Dorrie The Witch books. They can be hardback or paperback, and condition (although good would be nice) would be happy with any level of complete book. Not looking for signed books, just normal old books.
They were originally published as hardbacks in the USA but some paperback editions were released over here also.
They were a series of books my wife used to read when she was younger, and it would be nice to pick some up for her as she still talks about them. Maybe get a selection for her birthday in November. Not easy for me to buy on eBay without her seeing. 
I have listed the titles below, and will mark them off as I find them. There are always some on eBay but many dealers get greedy for really poor condition books.
- Dorrie's Magic, 1962
- Dorrie and the Blue Witch, 1964 – When Dorrie is left home alone by the Big Witch, she decides to have a tea party with Gink. There is a knock on the door. Expecting Cook to arrive any minute, Dorrie opens the door. Instead of Cook, she finds the bad Blue Witch. Dorrie scours Cook’s magic cabinet, uses its contents to capture the Blue Witch and receives a gold cauldron for her efforts.
- Dorrie's Play, 1965 – Shooed away by the Big Witch and Cook, Dorrie decides to put on a play with Gink. Dorrie picks up some cloth from the sewing room to use for her play. Not realizing it is the Big Witch’s costume for the Costume Ball, she has Cook cut it and then uses it for stage curtains. Once it is discovered that the Big Witch’s costume is ruined, Dorrie comes up with an idea that makes the Big Witch a winner.
- Dorrie and the Weather Box, 1966 - Dorrie finds a picnic basket and wants to have a picnic, but it’s raining. She decides to try to fix the weather by using the Big Witch’s secret magic room. Unable to find a recipe for melting clouds, Dorrie mixes two recipes together and hopes for the best. Instead of fixing the weather, Dorrie creates a colorful storm inside the house. The Big Witch comes home just in time to make things right.
- Dorrie and the Witch Doctor, 1967 - Dorrie promises to be on her best behavior when crabby Aunt Agra comes for a visit. Dorrie begins to feel ill and is sent to bed. The Witch Doctor is called and comes to diagnose Dorrie, but Aunt Agra is the one who winds up getting the treatment.
- Dorrie and the Wizard's Spell, 1968 - Dorrie has a great time at the Bazaar until her mother disappears and it turns out that the prankster Wink the Wizard is to blame.
- Dorrie and the Haunted House, 1970 - During a storm, Dorrie gets glued out of her house by a protection spell, leaving her to take cover in an old house in the woods. There she encounters two bandits who have stolen Witchville's powerfully magical Blue Ruby.
- Dorrie and the Birthday Eggs, 1971 - On an errand to buy some eggs for the Big Witch's birthday cake, Dorrie runs into the mischievous Thinnever Vetch, who steals Dorrie's galosh. While the Egg Witch and the Big Witch are busy trying to figure out which of the hens might be laying money instead of eggs, Dorrie must try to stop Thinnever Vetch from playing dangerous tricks on them all.
- Dorrie and the Goblin, 1972- Dorrie finds a goblin on her doorstep the day The Big Witch is having her Magic Show. She doesn't want to turn him out and goblin-sits in her room until the goblin gets out and Dorrie must use magic to save the day- and the goblin.
- Dorrie and the Fortune Teller, 1973- The Wizard Floog holds the Town Tower and Meadow in mortgage and is about to foreclose. Then a fortune teller Madame Zee shows up and foresees Witchville being destroyed, Dorrie wonders if Madame Zee is to be trusted.
- Dorrie and the Amazing Magic Elixir, 1974 - The Big Witch goes out, leaving Dorrie to take care of her new magic elixir. But she doesn't realize that an old enemy lurks outside just waiting for a chance to get his hands on the potion.
- Dorrie and the Witch's Imp, 1975 – When a new group of witches moves into Glumglen, a nearby town, the Big Witch invites them to dinner. As the Big Witch is leaving to pick up her new dress, a visitor, Gloris, arrives to fill in for Cook. While the Big Witch is away, Dorrie helps Gloris prepare dinner. Dorrie quickly becomes suspicious of Gloris, and rightfully so. Gloris does her best to get Dorrie out of the way, and even conjures up an imp to replace Dorrie.
- Dorrie and the Halloween Plot, 1976 - After a wild attempt at learning to ride a broomstick, Dorrie overhears the Flying Demons plotting to steal the Book of Shadows while everyone is distracted at the Halloween Pageant. Stuck in an awful costume, and with no time to spare, Dorrie must use her wits to stop the theft.
- Dorrie and the Dreamyard Monsters, 1977 - The Dream Witch has run out of potion and everyone in Witchville is having nightmares about purple monsters. When the Big Witch's spell to conjure the Dream Witch goes wrong, Dorrie is transported to the Dreamyard where she must help get the monsters under control once more.
- Dorrie and the Screebit Ghost, 1979 - Dorrie's mother goes out to take part in a seance, accidentally leaving behind her instructions on how to summon spirits. Dorrie finds the spell and tries it out, unwittingly bringing a playful but mischievous ghost into the house.
- Dorrie and the Witchville Fair, 1980 - Once again it is up to Dorrie to save Witchville when malicious Old Irontoes creates a funhouse mirror designed to cast a spell on anyone who looks into it at the Witchville Fair.
- Dorrie and the Witches' Camp, 1983 - Strange things have been happening at the Witches' Camp, and while the Big Witch insists that it's just a case of over-excited imaginations, Cook and Dorrie begin to suspect that the rumours of bears and sea monsters may have some truth to them after all, without realizing that there is an even more sinister explanation.
- Dorrie and the Museum Case, 1986
- Dorrie and the Pin Witch, 1989 - As all of Witchville is busy getting ready for the Witches' Ball, only Dorrie suspects that everyone's recent crabbiness has something to do with the nasty Pin Witch and the free hats and shawls she has been handing out.
- Dorrie and the Haunted Schoolhouse, 1992 - The Big Witch insists on Dorrie's going to school, but on their arrival Dorrie and the other students cannot find the teacher and decide to pass the time by trying out the potion recipe written up on the chalkboard. Their arguments lead to mistakes in potion-making which cause the school to become airborne, and they must figure out how to get it back on the ground.