Francis James Child 
English and Scottish Popular Ballads, Vol. 4 

Published between 1882 and 1898, this definitive collection compiles all the extant ballads with all known variants and features Child’s commentary for each work. Volume IV includes Parts VII and VIII of the original set — ballads 189-265: including "Rob Roy, " "Sir James the Rose, " "Geordie, " "The Gypsy Laddie, " "The New-Slain Knight, " more.