diff --git a/src/Calendars/Main.tsx b/src/Calendars/Main.tsx
index c902a59..66755a1 100644
--- a/src/Calendars/Main.tsx
+++ b/src/Calendars/Main.tsx
@@ -23,6 +23,7 @@ import PageNotFound, { PageNotFoundRoute } from "../PageNotFound";
 
 import { CachedCollection, getItemNavigationUid, getDecryptCollectionsFunction, getDecryptItemsFunction, PimFab, itemDelete, itemSave, defaultColor } from "../Pim/helpers";
 import { historyPersistor } from "../persist-state-history";
+import ItemChangeHistory from "../Pim/ItemChangeHistory";
 
 const PersistCalendar = historyPersistor("Calendar")(Calendar);
 
@@ -180,9 +181,17 @@ export default function CalendarsMain() {
               </Route>
               <Route
                 path={routeResolver.getRoute("pim.events._id.log")}
-              >
-                <h1>Not currently implemented.</h1>
-              </Route>
+                render={() => {
+                  const cachedCollection = cachedCollections!.find((x) => x.collection.uid === colUid)!;
+                  if (!cachedCollection) {
+                    return (<PageNotFound />);
+                  }
+
+                  return (
+                    <ItemChangeHistory collection={cachedCollection} itemUid={itemUid} />
+                  );
+                }}
+              />
               <Route
                 path={routeResolver.getRoute("pim.events._id")}
                 exact
diff --git a/src/Collections/CollectionChangeEntries.tsx b/src/Collections/CollectionChangeEntries.tsx
index 6017416..ec58a82 100644
--- a/src/Collections/CollectionChangeEntries.tsx
+++ b/src/Collections/CollectionChangeEntries.tsx
@@ -5,17 +5,13 @@ import * as React from "react";
 
 import * as Etebase from "etebase";
 
-import Dialog from "@material-ui/core/Dialog";
-import DialogTitle from "@material-ui/core/DialogTitle";
-import DialogContent from "@material-ui/core/DialogContent";
-import DialogActions from "@material-ui/core/DialogActions";
-import Button from "@material-ui/core/Button";
-
 import { useCredentials } from "../credentials";
 import { useItems } from "../etebase-helpers";
-import { CachedCollection } from "../Pim/helpers";
+import { CachedCollection, getRawItemNavigationUid } from "../Pim/helpers";
 import LoadingIndicator from "../widgets/LoadingIndicator";
 import GenericChangeHistory from "../components/GenericChangeHistory";
+import { useHistory } from "react-router";
+import { routeResolver } from "../App";
 
 export interface CachedItem {
   item: Etebase.Item;
@@ -48,7 +44,7 @@ interface PropsType {
 
 export default function CollectionChangeEntries(props: PropsType) {
   const [entries, setEntries] = React.useState<Map<string, CachedItem>>();
-  const [dialog, setDialog] = React.useState<CachedItem>();
+  const history = useHistory();
   const etebase = useCredentials()!;
 
   const { collection, metadata } = props.collection;
@@ -74,33 +70,29 @@ export default function CollectionChangeEntries(props: PropsType) {
     return a - b;
   });
 
+  let changelogRoute = "";
+  switch (colType) {
+    case "etebase.vevent": {
+      changelogRoute = "pim.events._id.log";
+      break;
+    }
+    case "etebase.vtodo": {
+      changelogRoute = "pim.tasks._id.log";
+      break;
+    }
+    case "etebase.vcard": {
+      changelogRoute = "pim.contacts._id.log";
+      break;
+    }
+  }
+
   return (
     <div style={{ height: "calc(100vh - 300px)" }}>
-      <Dialog
-        open={dialog !== undefined}
-        onClose={() => setDialog(undefined)}
-      >
-        <DialogTitle>
-          Raw Content
-        </DialogTitle>
-        <DialogContent>
-          <div>Entry UID: <pre className="d-inline-block">{dialog?.item.uid}</pre></div>
-          <div>Content:
-            <pre>{dialog?.content}</pre>
-          </div>
-        </DialogContent>
-        <DialogActions>
-          <Button
-            color="primary"
-            onClick={() => setDialog(undefined)}
-          >
-            Close
-          </Button>
-        </DialogActions>
-      </Dialog>
       <GenericChangeHistory
         items={entriesList}
-        onItemClick={setDialog}
+        onItemClick={(item) =>
+          history.push(routeResolver.getRoute(changelogRoute, { itemUid: getRawItemNavigationUid(collection.uid, item.item.uid) }))
+        }
       />
     </div>
   );
diff --git a/src/Contacts/Main.tsx b/src/Contacts/Main.tsx
index 689ceca..1f92786 100644
--- a/src/Contacts/Main.tsx
+++ b/src/Contacts/Main.tsx
@@ -21,6 +21,7 @@ import ContactEdit from "./ContactEdit";
 import PageNotFound, { PageNotFoundRoute } from "../PageNotFound";
 
 import { CachedCollection, getItemNavigationUid, getDecryptCollectionsFunction, getDecryptItemsFunction, PimFab, itemSave, itemDelete } from "../Pim/helpers";
+import ItemChangeHistory from "../Pim/ItemChangeHistory";
 
 const colType = "etebase.vcard";
 
@@ -148,9 +149,17 @@ export default function ContactsMain() {
               </Route>
               <Route
                 path={routeResolver.getRoute("pim.contacts._id.log")}
-              >
-                <h1>Not currently implemented.</h1>
-              </Route>
+                render={() => {
+                  const cachedCollection = cachedCollections!.find((x) => x.collection.uid === colUid)!;
+                  if (!cachedCollection) {
+                    return (<PageNotFound />);
+                  }
+
+                  return (
+                    <ItemChangeHistory collection={cachedCollection} itemUid={itemUid} />
+                  );
+                }}
+              />
               <Route
                 path={routeResolver.getRoute("pim.contacts._id")}
                 exact
diff --git a/src/Pim/ItemChangeHistory.tsx b/src/Pim/ItemChangeHistory.tsx
new file mode 100644
index 0000000..aaa69ac
--- /dev/null
+++ b/src/Pim/ItemChangeHistory.tsx
@@ -0,0 +1,109 @@
+// SPDX-FileCopyrightText: © 2017 EteSync Authors
+// SPDX-License-Identifier: AGPL-3.0-only
+
+import * as React from "react";
+
+import * as Etebase from "etebase";
+
+import Dialog from "@material-ui/core/Dialog";
+import DialogTitle from "@material-ui/core/DialogTitle";
+import DialogContent from "@material-ui/core/DialogContent";
+import DialogActions from "@material-ui/core/DialogActions";
+import Button from "@material-ui/core/Button";
+
+import { useCredentials } from "../credentials";
+import LoadingIndicator from "../widgets/LoadingIndicator";
+import GenericChangeHistory from "../components/GenericChangeHistory";
+import { useItems } from "../etebase-helpers";
+import { CachedCollection } from "./helpers";
+
+export interface CachedItem {
+  item: Etebase.Item;
+  metadata: Etebase.ItemMetadata;
+  content: string;
+}
+
+async function loadRevisions(etebase: Etebase.Account, col: Etebase.Collection, item: Etebase.Item) {
+  const ret: CachedItem[] = [];
+  const colMgr = etebase.getCollectionManager();
+  const itemManager = colMgr.getItemManager(col);
+
+  let iterator: string | null = null;
+  let done = false;
+  while (!done) {
+    // FIXME: shouldn't be any
+    const revisions: any = await itemManager.itemRevisions(item, { iterator, limit: 30 });
+    iterator = revisions.iterator;
+    done = revisions.done;
+
+    for (const item of revisions.data) {
+      ret.push({
+        item,
+        metadata: await item.getMeta(),
+        content: await item.getContent(Etebase.OutputFormat.String),
+      });
+    }
+  }
+
+  return ret;
+}
+
+interface PropsType {
+  collection: CachedCollection;
+  itemUid: string;
+}
+
+export default function ItemChangeHistory(props: PropsType) {
+  const [entries, setEntries] = React.useState<CachedItem[]>();
+  const [dialog, setDialog] = React.useState<CachedItem>();
+  const etebase = useCredentials()!;
+  const { collection, metadata } = props.collection;
+  const items = useItems(etebase, metadata.type);
+
+  const item = items?.get(collection.uid)?.get(props.itemUid);
+
+  React.useEffect(() => {
+    if (item) {
+      loadRevisions(etebase, collection, item)
+        .then((entries) => setEntries(entries));
+    }
+  }, [etebase, collection, item]);
+
+  if (!entries) {
+    return (
+      <LoadingIndicator />
+    );
+  }
+
+  return (
+    <div style={{ height: "calc(100vh - 300px)" }}>
+      <Dialog
+        open={dialog !== undefined}
+        onClose={() => setDialog(undefined)}
+      >
+        <DialogTitle>
+          Raw Content
+        </DialogTitle>
+        <DialogContent>
+          <div>Revision UID: <pre className="d-inline-block">{dialog?.item.etag}</pre></div>
+          <div>Content:
+            <pre>{dialog?.content}</pre>
+          </div>
+        </DialogContent>
+        <DialogActions>
+          <Button
+            color="primary"
+            onClick={() => setDialog(undefined)}
+          >
+            Close
+          </Button>
+        </DialogActions>
+      </Dialog>
+      <GenericChangeHistory
+        items={entries}
+        onItemClick={setDialog}
+      />
+    </div>
+  );
+}
+
diff --git a/src/Pim/helpers.tsx b/src/Pim/helpers.tsx
index 47f432f..1ec99a0 100644
--- a/src/Pim/helpers.tsx
+++ b/src/Pim/helpers.tsx
@@ -21,9 +21,13 @@ export interface CachedCollection {
   metadata: Etebase.CollectionMetadata;
 }
 
-export function getItemNavigationUid(item: PimType) {
+export function getRawItemNavigationUid(collectionUid: string, itemUid: string) {
   // Both collectionUid and itemUid are url safe
-  return `${item.collectionUid}|${item.itemUid}`;
+  return `${collectionUid}|${itemUid}`;
+}
+
+export function getItemNavigationUid(item: PimType) {
+  return getRawItemNavigationUid(item.collectionUid!, item.itemUid!);
 }
 
 export function getDecryptCollectionsFunction(_colType?: string) {
diff --git a/src/Tasks/Main.tsx b/src/Tasks/Main.tsx
index 645167f..8c76e58 100644
--- a/src/Tasks/Main.tsx
+++ b/src/Tasks/Main.tsx
@@ -21,6 +21,7 @@ import TaskEdit from "./TaskEdit";
 import PageNotFound, { PageNotFoundRoute } from "../PageNotFound";
 
 import { CachedCollection, getItemNavigationUid, getDecryptCollectionsFunction, getDecryptItemsFunction, PimFab, itemSave, itemDelete } from "../Pim/helpers";
+import ItemChangeHistory from "../Pim/ItemChangeHistory";
 
 const colType = "etebase.vtodo";
 
@@ -150,9 +151,17 @@ export default function TasksMain() {
               </Route>
               <Route
                 path={routeResolver.getRoute("pim.tasks._id.log")}
-              >
-                <h1>Not currently implemented.</h1>
-              </Route>
+                render={() => {
+                  const cachedCollection = cachedCollections!.find((x) => x.collection.uid === colUid)!;
+                  if (!cachedCollection) {
+                    return (<PageNotFound />);
+                  }
+
+                  return (
+                    <ItemChangeHistory collection={cachedCollection} itemUid={itemUid} />
+                  );
+                }}
+              />
               <Route
                 path={routeResolver.getRoute("pim.tasks._id")}
                 exact