diff --git a/src/lib/iter-source.hpp b/src/lib/iter-source.hpp
index 8649ffc6e..5a4caec07 100644
--- a/src/lib/iter-source.hpp
+++ b/src/lib/iter-source.hpp
@@ -178,6 +178,10 @@ namespace lib {
       
       static iterator EMPTY_SOURCE;
       
+      using value_type = TY;
+      using reference  = TY&;
+      using pointer    = TY*;
+      
       
       
     private:
diff --git a/src/lib/iter-tree-explorer.hpp b/src/lib/iter-tree-explorer.hpp
index 801d969ec..b78cfd8b5 100644
--- a/src/lib/iter-tree-explorer.hpp
+++ b/src/lib/iter-tree-explorer.hpp
@@ -271,6 +271,40 @@ namespace lib {
         }
       };
     
+    
+    /**
+     * Adapt an IterSource to make it iterable. As such, lib::IterSource is meant
+     * to be iterable, while only exposing a conventional VTable-based _iteration interface_.
+     * To support this usage, the library offers some builders to attach an iterator adapter.
+     * Two flavours need to be distinguished:
+     * - we get a _reference_ to something living elsewhere; all we know is it's iterable.
+     * - we get a pointer, indicating that we must take ownership and manage the lifetime.
+     *   The iterable entity in this case can be assumed heap allocated, featuring a virtual
+     *   destructor.
+     * The generated front-end has identical type in both cases; it is based on a shared_ptr,
+     * just a different deleter function is used in both cases. This design makes sense,
+     * since the protocol requires us to invoke virtual function IterSource::disconnect()
+     * when use count goes to zero.
+     */
+    template<class ISO>
+    class IterSourceIter
+      : public ISO::iterator
+      {
+      public:
+        IterSourceIter()  =default;
+        // standard copy operations
+        
+        /** link to existing IterSource (without memory management) */
+        IterSourceIter (ISO& externalSource)
+          : ISO::iterator{ISO::build (externalSource)}
+          { }
+        
+        /** own and manage a heap allocated IterSource */
+        IterSourceIter (ISO* heap_allocated_IterSource)
+          : ISO::iterator{ISO::build (heap_allocated_IterSource)}
+          { }
+      };
+    
   }//(End) namespace iter_explorer : basic iterator wrappers
   
   
@@ -366,6 +400,20 @@ namespace lib {
         using SrcVal  = typename SrcIter::value_type;
       };
     
+    template<class ISO>
+    struct _DecoratorTraits<ISO*,  enable_if<std::is_base_of<IterSource<typename ISO::value_type>, ISO>>>
+      {
+        using SrcIter = iter_explorer::IterSourceIter<ISO>;
+        using SrcVal  = typename ISO::value_type;
+      };
+    
+    template<class ISO>
+    struct _DecoratorTraits<ISO&,  enable_if<std::is_base_of<IterSource<typename ISO::value_type>, ISO>>>
+      {
+        using SrcIter = iter_explorer::IterSourceIter<ISO>;
+        using SrcVal  = typename ISO::value_type;
+      };
+    
   }//(End) TreeExplorer traits
   
   
diff --git a/tests/library/iter-tree-explorer-test.cpp b/tests/library/iter-tree-explorer-test.cpp
index f58fffe8c..d30cab277 100644
--- a/tests/library/iter-tree-explorer-test.cpp
+++ b/tests/library/iter-tree-explorer-test.cpp
@@ -885,31 +885,26 @@ namespace test{
             };
           
           
-          VerySpecivicIter vsit{5};
+          // simple standard case: create a new heap allocated IterSource implementation.
+          // TreeExplorer will take ownership (by smart-ptr) and build a Lumiera Iterator front-End
+          CHECK ("7-6-5-4-3-2-1" == materialise (
+                                      treeExplore(new VerySpecivicIter{7})));
+          
+          
+          
+          VerySpecivicIter vsit{4};
 
-#if false /////////////////////////////////////////////////////////////////////////////////////////////////////////////UNIMPLEMENTED :: TICKET #888
+          // attach to an IterSource living here in local scope...
           auto ii = treeExplore(vsit);
           
           CHECK (not isnil (ii));
-          CHECK (5 == *ii);
-          ++ii;
           CHECK (4 == *ii);
           CHECK (4 == vsit.currentVal());
-          
-          VerySpecivicIter* clone = new VerySpecivicIter(vsit);
-          
-          CHECK (4 == clone->currentVal());
-          
-          cout << materialise(
-                    treeExplore(clone)
-                    
-                  ) <<endl;
-          
-          CHECK (4 == vsit.currentVal());
-          CHECK (4 == *ii);
           ++ii;
           CHECK (3 == *ii);
+          CHECK (3 == vsit.currentVal());
           
+#if false /////////////////////////////////////////////////////////////////////////////////////////////////////////////UNIMPLEMENTED :: TICKET #888
           auto jj = ii.explore([](PrivateSource& source){ return source.expandChildren(); });
           
           CHECK (3 == *jj);
diff --git a/wiki/thinkPad.ichthyo.mm b/wiki/thinkPad.ichthyo.mm
index 02e7729b2..aab077306 100644
--- a/wiki/thinkPad.ichthyo.mm
+++ b/wiki/thinkPad.ichthyo.mm
@@ -6367,8 +6367,8 @@
 <node BACKGROUND_COLOR="#eee5c3" COLOR="#990000" CREATED="1513990803915" ID="ID_292438102" MODIFIED="1513990973201" TEXT="IterSource-Integration">
 <linktarget COLOR="#659fa4" DESTINATION="ID_292438102" ENDARROW="Default" ENDINCLINATION="853;414;" ID="Arrow_ID_1802135668" SOURCE="ID_1529167083" STARTARROW="None" STARTINCLINATION="674;0;"/>
 <icon BUILTIN="flag-yellow"/>
-<node BACKGROUND_COLOR="#eee5c3" COLOR="#990000" CREATED="1513990840253" ID="ID_923982542" MODIFIED="1513990864970" TEXT="wrapper analog zu WrappedLumieraIter">
-<icon BUILTIN="flag-yellow"/>
+<node COLOR="#338800" CREATED="1513990840253" ID="ID_923982542" MODIFIED="1514050246345" TEXT="wrapper und Iterator bauen">
+<icon BUILTIN="button_ok"/>
 </node>
 <node BACKGROUND_COLOR="#eee5c3" COLOR="#990000" CREATED="1513990851580" ID="ID_1445466432" MODIFIED="1513990865914" TEXT="Traits erweitern">
 <icon BUILTIN="flag-yellow"/>
@@ -7067,8 +7067,8 @@
 </node>
 <node BACKGROUND_COLOR="#eee5c3" COLOR="#990000" CREATED="1513990814361" ID="ID_306902168" MODIFIED="1513990821537" TEXT="verify_IterSource()">
 <icon BUILTIN="flag-yellow"/>
-<node BACKGROUND_COLOR="#eee5c3" COLOR="#990000" CREATED="1513990873545" ID="ID_1789456983" MODIFIED="1513990887336" TEXT="einfache Iteration">
-<icon BUILTIN="flag-yellow"/>
+<node COLOR="#338800" CREATED="1513990873545" ID="ID_1789456983" MODIFIED="1514050256867" TEXT="einfache Iteration">
+<icon BUILTIN="button_ok"/>
 </node>
 <node BACKGROUND_COLOR="#eee5c3" COLOR="#990000" CREATED="1513990880600" ID="ID_1730629901" MODIFIED="1513990886456" TEXT="Iteration + Expansion">
 <icon BUILTIN="flag-yellow"/>