diff --git a/inc/Import/Service/WpPostParser.php b/inc/Import/Service/WpPostParser.php
index 695d763..be28902 100644
--- a/inc/Import/Service/WpPostParser.php
+++ b/inc/Import/Service/WpPostParser.php
@@ -120,6 +120,10 @@ public function parse_post( SimpleXMLElement $document ) {
 				// ImportPostInterface attribute name
 				'attribute' => 'origin_id',
 			),
+			'post_author' => array(
+				'cast' => $int_cast,
+				'attribute' => 'origin_author_id'
+			),
 			'comment_status' => array(
 				'cast' => $string_cast,
 				'attribute' => 'comment_status',
@@ -155,8 +159,13 @@ public function parse_post( SimpleXMLElement $document ) {
 			'is_sticky' => array(
 				'cast' => $bool_cast,
 				'attribute' => 'is_sticky',
+			),
+			'attachment_url' => array(
+				'cast' => $string_cast,
+				'attribute' => 'origin_attachment_url'
 			)
 		);
+		$missing_attributes = array();
 		foreach ( $wp_attributes as $node_name => $parameter ) {
 			$object_param_name = $parameter[ 'attribute' ];
 			$type_cast_cb = $parameter[ 'cast' ];
@@ -165,9 +174,16 @@ public function parse_post( SimpleXMLElement $document ) {
 				$post_data[ $object_param_name ] = $type_cast_cb( $wp->{$node_name} );
 			} else {
 				$post_data[ $object_param_name ] = $type_cast_cb( '' );
-				$this->missing_attribute_error( $document, "wp:{$node_name}" );
+				$missing_attributes[ $node_name ] = $node_name;
 			}
 		}
+		if ( 'attachment' !== $post_data[ 'type' ] && isset( $missing_attributes[ 'attachment_url' ] ) ) {
+			unset( $missing_attributes[ 'attachment_url' ] );
+		}
+
+		foreach ( $missing_attributes as $node_name ) {
+			$this->missing_attribute_error( $document, "wp:{$node_name}" );
+		}
 
 		if ( isset( $wp->post_date_gmt ) ) {
 			// Todo: validate the DateTime instance (#38)
diff --git a/tests/phpunit/Unit/Import/Service/WpPostParserTest.php b/tests/phpunit/Unit/Import/Service/WpPostParserTest.php
index 6334060..e71435b 100644
--- a/tests/phpunit/Unit/Import/Service/WpPostParserTest.php
+++ b/tests/phpunit/Unit/Import/Service/WpPostParserTest.php
@@ -31,10 +31,6 @@ public function setUp() {
 	 */
 	public function test_parse_post_valid_item( SimpleXMLElement $item, Array $expected ) {
 
-		if ( ! empty( $expected[ 'post' ][ 'origin_attachment_url' ] ) ) {
-			$this->markTestSkipped( "Implement Type\\ImportPostInterface::origin_attachment_url first. See #41" );
-		}
-
 		Brain\Monkey::actions()
 			->expectFired( 'w2m_import_parse_post_error' )
 			->never();
@@ -132,6 +128,7 @@ public function parse_post_test_data() {
 			'title'                 => 'This is the post title',
 			'guid'                  => 'http://wpml.to.mlp/?p=4736',
 			'date'                  => '2014-04-23 09:45:30',
+			'origin_author_id'      => 4,
 			'comment_status'        => 'open',
 			'ping_status'           => 'open',
 			'type'                  => 'post',
@@ -165,6 +162,7 @@ public function parse_post_test_data() {
 		<wp:post_id>{$post[ 'origin_id' ]}</wp:post_id>
 		<wp:post_date><![CDATA[{$post[ 'date' ]}]]></wp:post_date>
 		<wp:post_date_gmt><![CDATA[{$post[ 'date' ]}]]></wp:post_date_gmt>
+		<wp:post_author><![CDATA[{$post[ 'origin_author_id' ]}]]></wp:post_author>
 		<wp:comment_status><![CDATA[{$post[ 'comment_status' ]}]]></wp:comment_status>
 		<wp:ping_status><![CDATA[{$post[ 'ping_status' ]}]]></wp:ping_status>
 		<wp:post_name><![CDATA[{$post[ 'name' ]}]]></wp:post_name>
@@ -243,6 +241,7 @@ public function parse_post_test_data() {
 			'title'                 => 'hello-world-2.jpeg',
 			'guid'                  => 'http://wpml.to.mlp/wp-content/uploads/2013/10/hello-world-2.jpeg',
 			'date'                  => '2013-10-27 20:13:05',
+			'origin_author_id'      => 1,
 			'comment_status'        => 'open',
 			'ping_status'           => 'open',
 			'type'                  => 'attachment',
@@ -276,6 +275,7 @@ public function parse_post_test_data() {
 			<wp:post_id>{$post['origin_id']}</wp:post_id>
 			<wp:post_date><![CDATA[]]></wp:post_date>
 			<wp:post_date_gmt><![CDATA[{$post['date']}]]></wp:post_date_gmt>
+			<wp:post_author><![CDATA[{$post[ 'origin_author_id' ]}]]></wp:post_author>
 			<wp:comment_status><![CDATA[{$post['comment_status']}]]></wp:comment_status>
 			<wp:ping_status><![CDATA[{$post['ping_status']}]]></wp:ping_status>
 			<wp:post_name><![CDATA[{$post['name']}]]></wp:post_name>
@@ -335,6 +335,7 @@ public function parse_post_test_data() {
 			'title'                 => 'This is the post title',
 			'guid'                  => 'http://wpml.to.mlp/?p=4736',
 			'date'                  => '2014-04-23 09:45:30',
+			'origin_author_id'      => 655,
 			'comment_status'        => 'open',
 			'ping_status'           => 'open',
 			'type'                  => 'post',
@@ -363,6 +364,7 @@ public function parse_post_test_data() {
 		<wp:post_id xmlns:wp="http://wordpress.org/export/1.2/">{$post[ 'origin_id' ]}</wp:post_id>
 		<wp:post_date xmlns:wp="http://wordpress.org/export/1.2/"><![CDATA[{$post[ 'date' ]}]]></wp:post_date>
 		<wp:post_date_gmt xmlns:wp="http://wordpress.org/export/1.2/"><![CDATA[{$post[ 'date' ]}]]></wp:post_date_gmt>
+		<wp:post_author xmlns:wp="http://wordpress.org/export/1.2/"><![CDATA[{$post[ 'origin_author_id' ]}]]></wp:post_author>
 		<wp:comment_status xmlns:wp="http://wordpress.org/export/1.2/"><![CDATA[{$post[ 'comment_status' ]}]]></wp:comment_status>
 		<wp:ping_status xmlns:wp="http://wordpress.org/export/1.2/"><![CDATA[{$post[ 'ping_status' ]}]]></wp:ping_status>
 		<wp:post_name xmlns:wp="http://wordpress.org/export/1.2/"><![CDATA[{$post[ 'name' ]}]]></wp:post_name>