diff --git a/src/models.rs b/src/models.rs
index a7dae87..5f556aa 100644
--- a/src/models.rs
+++ b/src/models.rs
@@ -1,5 +1,5 @@
 pub mod append_graph;
 pub mod graph;
 
-pub use append_graph::AppendGraph;
-pub use graph::Graph;
+pub use append_graph::{AppendGraph, AppendGraphEdgeMap, AppendGraphVertexMap};
+pub use graph::{Graph, GraphEdgeMap, GraphVertexMap};
diff --git a/src/models/append_graph.rs b/src/models/append_graph.rs
index 2f27194..9ccfef7 100644
--- a/src/models/append_graph.rs
+++ b/src/models/append_graph.rs
@@ -7,6 +7,9 @@ pub struct Vertex(usize);
 #[derive(Copy, Clone, PartialEq, Eq, Debug)]
 pub struct Edge(usize);
 
+pub type AppendGraphVertexMap<T> = VertexMap<Vertex, T>;
+pub type AppendGraphEdgeMap<T> = EdgeMap<Edge, T>;
+
 impl Edge {
     fn normalize(&self) -> Self {
         Self(self.0 & !1)
diff --git a/src/models/graph.rs b/src/models/graph.rs
index 15e5b51..ed86205 100644
--- a/src/models/graph.rs
+++ b/src/models/graph.rs
@@ -4,9 +4,11 @@ use crate::maps::{EdgeMap, VertexMap};
 use crate::traits::{GraphTopology, GraphTopologyDeletion, IncidenceCursor};
 
 pub type Vertex = Index<VertexIncidenceHeader, usize, usize>;
-
 pub type Edge = Index<IncidenceEntry, usize, usize>;
 
+pub type GraphVertexMap<T> = VertexMap<Vertex, T>;
+pub type GraphEdgeMap<T> = EdgeMap<Edge, T>;
+
 #[derive(Copy, Clone, PartialEq, Eq, Debug)]
 struct VertexSlot(usize);