Stevensoniana
noun plural but singular in construction
Ste·ven·so·niana
-ˈänə,
-ˈȧnə also -ˈānə
: writings by or about Robert Louis Stevenson
a collector and editor of minor Stevensoniana 
Yale Review
Yale Review
Word History
Etymology
New Latin, from Robert Louis Stevenson †1894 + New Latin -ana