To further explain this in detail far from me having to type a single word, Wiki to the rescue!
Little Lulu:
http://en.wikipedia.org/wiki/Little_LuluLittle Lulu was created in the 1930's by Marjorie Buell (under the pen name "Marge") for Saturday Evening Post. In 1944, she was adapted into an animated series of cartoons by Paramount-owned Famous Studios, which lasted to about 1949 I think. Lulu also appeared in her own comic book series that was published by Dell, Gold Key and Whitman comics for many decades. For a long time, the owners of the character was Western Publishing, which was later went through aquisitions, leading to Classic Media owning most rights to the character and comics (excluding these cartoons, perhaps as the Japanese-made TV series in the 70's, though I assume they probably own the Cinar Films TV series that came out in the 90's). Most recently, Dark Horse has reprinted these comic stories in graphic novel form that are probably still available in most bookstores.
Little Audrey:
http://en.wikipedia.org/wiki/Little_AudreyLittle Audrey is often said to be the replacement for Lulu once the deal to produce those cartoons expired, and it pretty much is, her first appearance of course was in "Santa's Surprise", later to spun off into her own series which lasted until the mid 50's. A second life for the character took place in the comics and stories published by Harvey Comics for many decades after that (whom also purchased the rights to other Famous Studio creations like Casper, Herman & Katnip and Baby Huey). Ironically, the Harvey characters are now also owned by Classic Media along with Lulu (go figure).