diff --git a/src/cmr/concepts/collection.js b/src/cmr/concepts/collection.js
index 66a4845cc..251a8b4c4 100644
--- a/src/cmr/concepts/collection.js
+++ b/src/cmr/concepts/collection.js
@@ -334,7 +334,7 @@ export default class Collection extends Concept {
    * @param {Object} item The item returned from the CMR umm endpoint
    */
   normalizeUmmItem(item) {
-    const { umm } = item
+    const { umm = {} } = item
 
     const { ArchiveAndDistributionInformation: archiveAndDistributionInformation = {} } = umm
 
diff --git a/src/resolvers/__tests__/collection.test.js b/src/resolvers/__tests__/collection.test.js
index dde96affb..461aec7e9 100644
--- a/src/resolvers/__tests__/collection.test.js
+++ b/src/resolvers/__tests__/collection.test.js
@@ -708,6 +708,110 @@ describe('Collection', () => {
             collection: null
           })
         })
+
+        describe('when retrieving revisions that contain tombstones', () => {
+          test('includes them in the results', async () => {
+            nock(/example-cmr/)
+              .defaultReplyHeaders({
+                'CMR-Hits': 1,
+                'CMR-Took': 7,
+                'CMR-Request-Id': 'abcd-1234-efgh-5678'
+              })
+              .get(/collections\.json/)
+              .reply(200, {
+                feed: {
+                  entry: [{
+                    id: 'C100001-EDSC'
+                  }],
+                  facets: {}
+                }
+              })
+
+            nock(/example-cmr/)
+              .defaultReplyHeaders({
+                'CMR-Hits': 3,
+                'CMR-Took': 7,
+                'CMR-Request-Id': 'abcd-1234-efgh-5678'
+              })
+              .get('/search/collections.umm_json?all_revisions=true&concept_id=C100001-EDSC')
+              .reply(200, {
+                items: [{
+                  meta: {
+                    'concept-id': 'C100001-EDSC',
+                    'revision-id': '3',
+                    deleted: false
+                  },
+                  umm: {
+                    Abstract: 'Cras mattis consectetur purus sit amet fermentum.'
+                  }
+                }, {
+                  meta: {
+                    'concept-id': 'C100001-EDSC',
+                    'revision-id': '2',
+                    deleted: true
+                  }
+                }, {
+                  meta: {
+                    'concept-id': 'C100001-EDSC',
+                    'revision-id': '1',
+                    deleted: false
+                  },
+                  umm: {
+                    Abstract: 'Cras mattis consectetur purus sit amet fermentum.'
+                  }
+                }]
+              })
+
+            const response = await server.executeOperation({
+              variables: {},
+              query: `{
+                collections {
+                  count
+                  facets
+                  items {
+                    conceptId
+                    revisions {
+                      count
+                      items {
+                        revisionId
+                      }
+                    }
+                  }
+                }
+              }`
+            }, {
+              contextValue
+            })
+
+            const { data, errors } = response.body.singleResult
+
+            expect(errors).toBeUndefined()
+
+            expect(data).toEqual({
+              collections: {
+                count: 1,
+                facets: {},
+                items: [{
+                  conceptId: 'C100001-EDSC',
+                  revisions: {
+                    count: 3,
+                    items: [
+                      {
+                        revisionId: '3'
+                      },
+                      {
+                        revisionId: '2'
+                      },
+                      {
+                        revisionId: '1'
+                      }
+                    ]
+                  }
+                }]
+              }
+            })
+          })
+        })
       })
     })
   })