diff --git a/app/db/src/app/common/card-operations.spec.ts b/app/db/src/app/common/card-operations.spec.ts
index 54f957e7..0c98662b 100644
--- a/app/db/src/app/common/card-operations.spec.ts
+++ b/app/db/src/app/common/card-operations.spec.ts
@@ -1,11 +1,12 @@
 import { maybeMergeCards, mergeCardList } from './card-operations';
 import { BibleReference, Overlap } from './bible-reference';
+import { CardType } from '../models/app-state';
 
 describe('Card Merging', () => {
   it('Should merge two equal cards', () => {
     let cardList = [
-      { type: 'Passage', qry: 'Genesis 1:1', data: null, dict: '' },
-      { type: 'Passage', qry: 'Genesis 1:1', data: null, dict: '' },
+      { type: CardType.Passage, qry: 'Genesis 1:1', data: null, dict: '' },
+      { type: CardType.Passage, qry: 'Genesis 1:1', data: null, dict: '' },
     ];
     for (const strat of [Overlap.Equal, Overlap.Subset]) {
       let merged = mergeCardList(cardList, strat);
@@ -16,9 +17,9 @@ describe('Card Merging', () => {
 
   it('Should merge two equal cards with one in the middle', () => {
     let cardList = [
-      { type: 'Passage', qry: 'Genesis 1:1', data: null, dict: '' },
-      { type: 'Passage', qry: 'Genesis 1:2', data: null, dict: '' },
-      { type: 'Passage', qry: 'Genesis 1:1', data: null, dict: '' },
+      { type: CardType.Passage, qry: 'Genesis 1:1', data: null, dict: '' },
+      { type: CardType.Passage, qry: 'Genesis 1:2', data: null, dict: '' },
+      { type: CardType.Passage, qry: 'Genesis 1:1', data: null, dict: '' },
     ];
     for (const strat of [Overlap.Equal, Overlap.Subset]) {
       let merged = mergeCardList(cardList, strat);
@@ -30,8 +31,8 @@ describe('Card Merging', () => {
 
   it('Should merge two intersecting cards', () => {
     let cardList = [
-      { type: 'Passage', qry: 'Genesis 1:1-2', data: null, dict: '' },
-      { type: 'Passage', qry: 'Genesis 1:1', data: null, dict: '' },
+      { type: CardType.Passage, qry: 'Genesis 1:1-2', data: null, dict: '' },
+      { type: CardType.Passage, qry: 'Genesis 1:1', data: null, dict: '' },
     ];
     for (const strat of [Overlap.Intersect, Overlap.Subset]) {
       let merged = mergeCardList(cardList, strat);
@@ -42,9 +43,9 @@ describe('Card Merging', () => {
 
   it('Should merge two intersecting cards with one in the middle', () => {
     let cardList = [
-      { type: 'Passage', qry: 'Genesis 1:1-2', data: null, dict: '' },
-      { type: 'Passage', qry: 'Genesis 1:4', data: null, dict: '' },
-      { type: 'Passage', qry: 'Genesis 1:1', data: null, dict: '' },
+      { type: CardType.Passage, qry: 'Genesis 1:1-2', data: null, dict: '' },
+      { type: CardType.Passage, qry: 'Genesis 1:4', data: null, dict: '' },
+      { type: CardType.Passage, qry: 'Genesis 1:1', data: null, dict: '' },
     ];
     for (const strat of [Overlap.Intersect, Overlap.Subset]) {
       let merged = mergeCardList(cardList, strat);
diff --git a/app/db/src/app/common/card-operations.ts b/app/db/src/app/common/card-operations.ts
index fcc4a4cd..defcd701 100644
--- a/app/db/src/app/common/card-operations.ts
+++ b/app/db/src/app/common/card-operations.ts
@@ -1,5 +1,5 @@
 import { BibleReference, Overlap } from './bible-reference';
-import { CardItem } from '../models/app-state';
+import { CardItem, CardType } from '../models/app-state';
 
 export function maybeMergeCards(leftCard: CardItem, rightCard: CardItem, strategy: Overlap): CardItem | null {
   if (leftCard.type === rightCard.type) {
@@ -11,7 +11,7 @@ export function maybeMergeCards(leftCard: CardItem, rightCard: CardItem, strateg
         break;
       case Overlap.Intersect:
       case Overlap.Subset:
-        if (leftCard.type === 'Passage') {
+        if (leftCard.type === CardType.Passage) {
           const leftRef = new BibleReference(leftCard.qry);
           const rightRef = new BibleReference(rightCard.qry);
           let mergedRef = BibleReference.mergeReference(leftRef, rightRef, strategy);
diff --git a/app/db/src/app/models/app-state.ts b/app/db/src/app/models/app-state.ts
index 09b0724c..f265dd24 100644
--- a/app/db/src/app/models/app-state.ts
+++ b/app/db/src/app/models/app-state.ts
@@ -75,11 +75,18 @@ export interface SavedPage {
   readonly id: string;
 }
 
+export enum CardType {
+  Passage,
+  Note,
+  Word,
+  Strongs,
+  Error,
+}
+
 export interface CardItem {
   readonly qry: string;
   readonly data: Data;
-  // TODO(jwall): This should probably be an enum
-  readonly type: string;
+  readonly type: CardType;
   readonly dict: string;
 }
 
diff --git a/app/db/src/app/search/components/search-page/search.page.ts b/app/db/src/app/search/components/search-page/search.page.ts
index 277ebe38..8ab17157 100644
--- a/app/db/src/app/search/components/search-page/search.page.ts
+++ b/app/db/src/app/search/components/search-page/search.page.ts
@@ -4,7 +4,7 @@ import { FormControl } from '@angular/forms';
 import { MatDialog } from '@angular/material/dialog';
 import { AppService } from '../../../services/app.service';
 import { NavService } from '../../../services/nav.service';
-import { OpenData, CardItem } from '../../../models/app-state';
+import { OpenData, CardItem, CardType } from '../../../models/app-state';
 import { BibleReference } from '../../../common/bible-reference';
 import { VersePickerModalComponent } from '../verse-picker-modal/verse-picker-modal.component';
 import { SubscriberComponent } from '../../../common/components/subscriber.component';
@@ -143,19 +143,19 @@ export class SearchPage extends SubscriberComponent implements OnInit {
   }
 
   isError(t: CardItem) {
-    return t.type === 'Error';
+    return t.type === CardType.Error;
   }
   isPassage(t: CardItem) {
-    return t.type === 'Passage';
+    return t.type === CardType.Passage;
   }
   isNote(t: CardItem) {
-    return t.type === 'Note';
+    return t.type === CardType.Note;
   }
   isStrongs(t: CardItem) {
-    return t.type === 'Strongs';
+    return t.type === CardType.Strongs;
   }
   isWords(t: CardItem) {
-    return t.type === 'Words';
+    return t.type === CardType.Word;
   }
 
   //#endregion
diff --git a/app/db/src/app/services/app.service.ts b/app/db/src/app/services/app.service.ts
index 06b2492e..f463e663 100644
--- a/app/db/src/app/services/app.service.ts
+++ b/app/db/src/app/services/app.service.ts
@@ -1,6 +1,6 @@
 import { HttpClient } from '@angular/common/http';
 import { Injectable } from '@angular/core';
-import { AppState, SavedPage, Error, CardItem, DisplaySettings, User } from '../models/app-state';
+import { AppState, SavedPage, Error, CardItem, DisplaySettings, User, CardType } from '../models/app-state';
 import { Section, BibleReference, Overlap } from '../common/bible-reference';
 import { PageTitles, PageIcons } from '../constants';
 import { createStateService } from '../common/state-service';
@@ -27,7 +27,7 @@ const initialState: AppState = {
     {
       qry: 'UUIDGOESHERE',
       dict: 'n/a',
-      type: 'Note',
+      type: CardType.Note,
       data: {
         id: UUID.UUID(),
         xref: '1 pe 2:16; jn 3:16',
@@ -396,12 +396,12 @@ function reducer(state: AppState, action: AppAction): AppState {
           return {
             qry: o.id,
             dict: 'n/a',
-            type: 'Note',
+            type: CardType.Note,
             data: o,
           };
         });
 
-      let cards = [];
+      let cards = [] as CardItem[];
 
       if (action.nextToItem && state.displaySettings.value.insertCardNextToItem) {
         const idx = state.cards.indexOf(action.nextToItem);
@@ -432,7 +432,7 @@ function reducer(state: AppState, action: AppAction): AppState {
       const card = {
         qry: note.id,
         dict: 'n/a',
-        type: 'Note',
+        type: CardType.Note,
         data: note,
       };
 
@@ -713,7 +713,7 @@ export class AppService extends createStateService(reducer, initialState) {
     const card = {
       qry: `${d}${strongsNumber}`,
       dict: d,
-      type: 'Strongs',
+      type: CardType.Word,
       data: result,
     };
     return card;
@@ -831,7 +831,7 @@ export class AppService extends createStateService(reducer, initialState) {
     return {
       qry: ref.toString(),
       dict: ref.section.book.bookNumber > 39 ? 'G' : 'H',
-      type: 'Passage',
+      type: CardType.Passage,
       data: result,
     };
   }
@@ -995,7 +995,7 @@ export class AppService extends createStateService(reducer, initialState) {
     const card = {
       qry,
       dict: 'n/a',
-      type: 'Words',
+      type: CardType.Word,
       data: result,
     };