diff --git a/frontend/src/components/TextTrack.js b/frontend/src/components/TextTrack.js
index 5b8c3dea..e2b8dcd1 100644
--- a/frontend/src/components/TextTrack.js
+++ b/frontend/src/components/TextTrack.js
@@ -77,6 +77,20 @@ chr1    791044  793910  chr8:248210-251154,2    7       .`
 "chr5:1270279-1272416<->SV40:5172-5243"	TRUE	FALSE	NA	35	37.2369416773403
 "chr8:128109053-128110360<->chr8:129534833-129536039"	FALSE	FALSE	1425729.5	100	34.8639202860754
 "chr20:49345639-49354229<->chr20:50511129-50512012"	FALSE	FALSE	1161636.5	129	30.5556940820741`
+    },
+    callingcard: {
+        label: 'callingcard',
+        desc: 'Text file in CCF format, comprising 4-6 columns: chrom, start, end, value; and, optionally, strand and annotation',
+        example: `chr1    51441754        51441758        1       -       CTAGAGACTGGC
+chr1    51441754        51441758        21      -       CTTTCCTCCCCA
+chr1    51982564        51982568        3       +       CGCGATCGCGAC
+chr1    52196476        52196480        1       +       AGAATATCTTCA
+chr1    52341019        52341023        1       +       TACGAAACACTA
+chr1    59951043        59951047        1       +       ACAAGACCCCAA
+chr1    59951043        59951047        1       +       ACAAGAGAGACT
+chr1    61106283        61106287        1       -       ATGCACTACTTC
+chr1    61106283        61106287        7       -       CGTTTTTCACCT
+chr1    61542006        61542010        1       -       CTGAGAGACTGG`
     }
 };
 
diff --git a/frontend/src/components/trackConfig/CallingCardTrackConfig.ts b/frontend/src/components/trackConfig/CallingCardTrackConfig.ts
index a5dabd4c..96d68027 100644
--- a/frontend/src/components/trackConfig/CallingCardTrackConfig.ts
+++ b/frontend/src/components/trackConfig/CallingCardTrackConfig.ts
@@ -6,6 +6,7 @@ import { BedWorker } from '../../dataSources/WorkerTSHook';
 import LocalBedSource from '../../dataSources/LocalBedSource';
 import CallingCard from '../../model/CallingCard';
 import BedRecord from '../../dataSources/bed/BedRecord';
+import BedTextSource from "../../dataSources/BedTextSource";
 import HeightConfig from '../trackContextMenu/HeightConfig';
 import YscaleConfig from '../trackContextMenu/YscaleConfig';
 import LogScaleConfig from '../trackContextMenu/LogScaleConfig';
@@ -22,10 +23,18 @@ export class CallingCardTrackConfig extends TrackConfig {
     }
 
     initDataSource() {
-        if (this.trackModel.files.length > 0) {
-            return new LocalBedSource(this.trackModel.files);
+        if (this.trackModel.isText) {
+            return new BedTextSource({
+                url: this.trackModel.url,
+                blob: this.trackModel.fileObj,
+                textConfig: this.trackModel.textConfig
+            });
         } else {
-            return new WorkerSource(BedWorker, this.trackModel.url);
+            if (this.trackModel.files.length > 0) {
+                return new LocalBedSource(this.trackModel.files);
+            } else {
+                return new WorkerSource(BedWorker, this.trackModel.url);
+            }
         }
     }