diff --git a/src/zello/Event_OnError.kt b/src/zello/Event_OnError.kt
new file mode 100644
index 0000000..1ae928c
--- /dev/null
+++ b/src/zello/Event_OnError.kt
@@ -0,0 +1,10 @@
+package zello
+
+import com.fasterxml.jackson.annotation.JsonPropertyOrder
+
+@Suppress("unused")
+@JsonPropertyOrder(value = ["command", "error"])
+class Event_OnError {
+    var command: String = ""    // must be "on_error"
+    var error: String = ""
+}
\ No newline at end of file
diff --git a/src/zello/Event_OnImage.kt b/src/zello/Event_OnImage.kt
new file mode 100644
index 0000000..8db4479
--- /dev/null
+++ b/src/zello/Event_OnImage.kt
@@ -0,0 +1,17 @@
+package zello
+
+import com.fasterxml.jackson.annotation.JsonPropertyOrder
+
+@Suppress("unused")
+@JsonPropertyOrder(value = ["command", "channel", "from", "for", "message_id", "type", "height", "width", "source"])
+class Event_OnImage {
+    var command: String = ""    // must be "on_image"
+    var channel: String = ""
+    var from: String = ""      // user who sent the image
+    var For: String = ""        // should be "for" not "For"
+    var message_id: Int=0
+    var type: String = ""       // must be "jpeg"
+    var height: Int = 0
+    var width: Int = 0
+    var source: String = ""     // "camera" or "library"
+}
\ No newline at end of file
diff --git a/src/zello/Event_OnLocation.kt b/src/zello/Event_OnLocation.kt
new file mode 100644
index 0000000..9066cd8
--- /dev/null
+++ b/src/zello/Event_OnLocation.kt
@@ -0,0 +1,18 @@
+package zello
+
+import com.fasterxml.jackson.annotation.JsonPropertyOrder
+
+@Suppress("unused")
+@JsonPropertyOrder(value = ["command", "channel", "from", "for", "message_id", "latitude", "longitude", "formatted_address", "accuracy"])
+class Event_OnLocation {
+    var command: String = ""        // must be "on_location"
+    var channel: String = ""
+    var from: String = ""          // user
+    var For: String = ""            // should be "for" not "For"
+    var message_id: Int = 0
+    var latitude: Double = 0.0
+    var longitude: Double = 0.0
+    var formatted_address: String = ""
+    var accuracy: Double = 0.0
+
+}
\ No newline at end of file
diff --git a/src/zello/Event_OnTextMessage.kt b/src/zello/Event_OnTextMessage.kt
new file mode 100644
index 0000000..b197dac
--- /dev/null
+++ b/src/zello/Event_OnTextMessage.kt
@@ -0,0 +1,14 @@
+package zello
+
+import com.fasterxml.jackson.annotation.JsonPropertyOrder
+
+@Suppress("unused")
+@JsonPropertyOrder(value = ["command", "channel", "from", "For", "message_id", "text"])
+class Event_OnTextMessage {
+    var command : String = ""   // must be "on_text_message"
+    var channel : String = ""
+    var from: String = ""
+    var For: String = ""        // should be "for" not "For"
+    var message_id: Int=0
+    var text: String = ""
+}
\ No newline at end of file