Something

smcv@carbon% dpkg -L libtelepathy-glib-dev
/.
/usr
/usr/include
/usr/include/telepathy-1.0
/usr/include/telepathy-1.0/telepathy-glib
/usr/include/telepathy-1.0/telepathy-glib/svc-properties-interface.h
/usr/include/telepathy-1.0/telepathy-glib/util.h
/usr/include/telepathy-1.0/telepathy-glib/svc-connection-manager.h
/usr/include/telepathy-1.0/telepathy-glib/_gen
/usr/include/telepathy-1.0/telepathy-glib/_gen/telepathy-enums.h
...
/usr/include/telepathy-1.0/telepathy-glib/_gen/svc-Connection_Interface_Capabilities.h
/usr/include/telepathy-1.0/telepathy-glib/run.h
...
/usr/include/telepathy-1.0/telepathy-glib/text-mixin.h
/usr/lib
/usr/lib/libtelepathy-glib.a
/usr/lib/pkgconfig
/usr/lib/pkgconfig/telepathy-glib.pc
/usr/share
/usr/share/doc
/usr/lib/libtelepathy-glib.so
/usr/share/doc/libtelepathy-glib-dev

smcv@carbon% dpkg -L libtelepathy-glib-unstable-dev
/.
/usr
/usr/include
/usr/include/telepathy-unstable
/usr/include/telepathy-unstable/telepathy-glib
/usr/include/telepathy-unstable/telepathy-glib/_gen
/usr/include/telepathy-unstable/telepathy-glib/_gen/unstable-interfaces.h
...
/usr/include/telepathy-unstable/telepathy-glib/_gen/svc-Connection_Interface_Forwarding.h
/usr/include/telepathy-unstable/telepathy-glib/svc-unstable.h
/usr/lib
/usr/lib/libtelepathy-glib-unstable.a
/usr/lib/pkgconfig
/usr/lib/pkgconfig/telepathy-glib-unstable.pc
/usr/share
/usr/share/doc
/usr/share/doc/libtelepathy-glib-unstable-dev