diff --git a/src/opentimelineio/multiMediaReference.cpp b/src/opentimelineio/multiMediaReference.cpp
deleted file mode 100644
index 33b7cb6a9a..0000000000
--- a/src/opentimelineio/multiMediaReference.cpp
+++ /dev/null
@@ -1,37 +0,0 @@
-#include "opentimelineio/mediaReference.h"
-
-namespace opentimelineio { namespace OPENTIMELINEIO_VERSION {
-
-MultiMediaReference::MultiMediaReference(
-    std::string const& name, AnyDictionary const& metadata)
-    : Parent(name, metadata)
-    , _available_range(available_range)
-{}
-
-MultiMediaReference::~MultiMediaReference()
-{}
-
-optional<TimeRange>
-MultiMediaReference::available_range() const noexcept final
-{}
-
-void
-MultiMediaReference::set_available_range(
-    optional<TimeRange> const& available_range) final
-{}
-
-bool
-MultiMediaReference::read_from(Reader& reader)
-{
-    return reader.read_if_present("available_range", &_available_range) &&
-           Parent::read_from(reader);
-}
-
-void
-MultiMediaReference::write_to(Writer& writer) const
-{
-    Parent::write_to(writer);
-    writer.write("available_range", _available_range);
-}
-
-}} // namespace opentimelineio::OPENTIMELINEIO_VERSION
diff --git a/src/opentimelineio/multiMediaReference.h b/src/opentimelineio/multiMediaReference.h
deleted file mode 100644
index 8ac9c73002..0000000000
--- a/src/opentimelineio/multiMediaReference.h
+++ /dev/null
@@ -1,39 +0,0 @@
-#pragma once
-
-#include "opentimelineio/mediaReference.h"
-#include "opentimelineio/version.h"
-
-namespace opentimelineio { namespace OPENTIMELINEIO_VERSION {
-
-class MultiMediaReference final : public MediaReference
-{
-    using References = std::vector<Retainer<MediaReference>>;
-
-public:
-    struct Schema
-    {
-        static auto constexpr name   = "MultiMediaReference";
-        static int constexpr version = 1;
-    };
-
-    using Parent = MediaReference;
-
-    MultiMediaReference(
-        std::string const&   name     = std::string(),
-        AnyDictionary const& metadata = AnyDictionary());
-
-    optional<TimeRange> available_range() const noexcept final;
-
-    void set_available_range(optional<TimeRange> const& available_range) final;
-
-protected:
-    virtual ~MultiMediaReference();
-
-    virtual bool read_from(Reader&);
-    virtual void write_to(Writer&) const;
-
-private:
-    References _references;
-};
-
-}} // namespace opentimelineio::OPENTIMELINEIO_VERSION
diff --git a/src/opentimelineio/serializableObject.h b/src/opentimelineio/serializableObject.h
index f7fd5170fb..5309177fc8 100644
--- a/src/opentimelineio/serializableObject.h
+++ b/src/opentimelineio/serializableObject.h
@@ -10,7 +10,7 @@
 #include "opentimelineio/typeRegistry.h"
 #include "opentimelineio/version.h"
 
-#include <ImathBox.h>
+#include "ImathBox.h"
 
 #include <list>
 #include <type_traits>