<s>
1920s	B-Application
Investigators	I-Application
 '	I-Application
Companion	I-Application
is	O
a	O
role-playing	O
game	O
supplement	O
for	O
Call	B-Application
of	I-Application
Cthulhu	I-Application
by	O
Keith	O
Herber	O
,	O
published	O
by	O
Chaosium	O
.	O
</s>
<s>
Because	O
modern	O
game	O
players	O
may	O
not	O
know	O
much	O
about	O
the	O
early	O
part	O
of	O
the	O
twentieth	O
century	O
,	O
1920s	B-Application
Investigators	I-Application
 '	I-Application
Companion	I-Application
contains	O
basic	O
information	O
on	O
the	O
1920s	O
.	O
</s>
