There are 1 book by R.S.B,O,L on BookOrb. A strong starting point is Heroic Youths (1946). The bibliography below is in publication order, with series grouped in reading order.
Standalone books
Frequently asked questions
How many books has R.S.B,O,L written?
BookOrb lists 1 book by R.S.B,O,L.
Where should I start with R.S.B,O,L?
A good starting point is Heroic Youths (1946).
What is the R.S.B,O,L books in order list?
In publication order: 1. Heroic Youths (1946).