diff --git a/README.md b/README.md
index 6c753f1..c558801 100644
--- a/README.md
+++ b/README.md
@@ -87,7 +87,7 @@ is thrown. If the database is invalid or corrupt, a
 
 See the API documentation for more details.
 
-### Example ###
+### City Example ###
 
 ```php
 <?php
@@ -118,6 +118,64 @@ print($record->location->longitude . "\n"); // -93.2323
 
 ```
 
+### Connection-Type Example ###
+
+```php
+<?php
+require_once 'vendor/autoload.php';
+use GeoIp2\Database\Reader;
+
+// This creates the Reader object, which should be reused across
+// lookups.
+$reader = new Reader('/usr/local/share/GeoIP/GeoIP2-Connection-Type.mmdb');
+
+$record = $reader->connectionType('128.101.101.101');
+
+print($record->connectionType . "\n"); // 'Corporate'
+print($record->ipAddress . "\n"); // '128.101.101.101'
+
+```
+
+### Domain Example ###
+
+```php
+<?php
+require_once 'vendor/autoload.php';
+use GeoIp2\Database\Reader;
+
+// This creates the Reader object, which should be reused across
+// lookups.
+$reader = new Reader('/usr/local/share/GeoIP/GeoIP2-Domain.mmdb');
+
+$record = $reader->domain('128.101.101.101');
+
+print($record->domain . "\n"); // 'umn.edu'
+print($record->ipAddress . "\n"); // '128.101.101.101'
+
+```
+
+### ISP Example ###
+
+```php
+<?php
+require_once 'vendor/autoload.php';
+use GeoIp2\Database\Reader;
+
+// This creates the Reader object, which should be reused across
+// lookups.
+$reader = new Reader('/usr/local/share/GeoIP/GeoIP2-ISP.mmdb');
+
+$record = $reader->isp('128.101.101.101');
+
+print($record->autonomousSystemNumber . "\n"); // 217
+print($record->autonomousSystemOrganization . "\n"); // 'University of Minnesota'
+print($record->isp . "\n"); // 'University of Minnesota'
+print($record->organization . "\n"); // 'University of Minnesota'
+
+print($record->ipAddress . "\n"); // '128.101.101.101'
+
+```
+
 ## Web Service Client ##
 
 ### Usage ###
diff --git a/src/GeoIp2/Model/AbstractModel.php b/src/GeoIp2/Model/AbstractModel.php
index fddf625..69a86ee 100644
--- a/src/GeoIp2/Model/AbstractModel.php
+++ b/src/GeoIp2/Model/AbstractModel.php
@@ -24,7 +24,7 @@ abstract class AbstractModel implements \JsonSerializable
      */
     protected function get($field)
     {
-        return isset($this->raw[$field]) ? $this->raw[$field] : array();
+        return isset($this->raw[$field]) ? $this->raw[$field] : null;
     }
 
     /**
@@ -32,7 +32,7 @@ abstract class AbstractModel implements \JsonSerializable
      */
     public function __get($attr)
     {
-        if ($attr != "instance" && isset($this->$attr)) {
+        if ($attr != "instance" && property_exists($this, $attr)) {
             return $this->$attr;
         }
 
diff --git a/src/GeoIp2/Record/AbstractRecord.php b/src/GeoIp2/Record/AbstractRecord.php
index 7210aff..b81bfea 100644
--- a/src/GeoIp2/Record/AbstractRecord.php
+++ b/src/GeoIp2/Record/AbstractRecord.php
@@ -11,7 +11,7 @@ abstract class AbstractRecord implements \JsonSerializable
      */
     public function __construct($record)
     {
-        $this->record = $record;
+        $this->record = isset($record) ? $record : array();
     }
 
     /**