Complex sentence: Two further sequels relating the adventures of Katy's younger siblings were also published- "Clover" and "In the High Valley"; although these were long out of print, they have now been reprinted and are available online.
Split into simpler sentences: Two further sequels relating the adventures of Katy's younger siblings were also published- "Clover" and "In the High Valley". Although these were long out of print, they have now been reprinted and are available online.