Dolly Darlings were 4" girl and boy dolls (mostly girls) distributed by Hasbro in the 1960's. There was a variety of characters and outfits available in the line.
Although clothed, the dolls' clothing was not removable. Instead, an individual doll's outfit 'defined' the doll's character. Hair for Dolly Darlings was either molded or rooted; rooted-hair dolls were sold individually, while dolls with molded hair were available in play sets.
'Hatbox playsets' mainly consisted of round hatbox carrying cases, holding a single doll with accessories, with each one centered around a theme. One such, Susie Goes To School, featured black-haired Susie in her schoolgirl outfit, the accessories included books, a ruler, scissors, and an apple for the teacher.
Play Rooms consisted of square areas resembling one quarter of a house, with two walls on adjoining sides; thus all four Play Rooms could be pushed together to form a complete house.
Flower Darlings were 3-1/2" dolls attached to plastic flower pins. They were available beginning in about 1968.