diff --git a/Classes/PHPExcel/Reader/Excel2007.php b/Classes/PHPExcel/Reader/Excel2007.php
index f20e5e47..a1e18d36 100644
--- a/Classes/PHPExcel/Reader/Excel2007.php
+++ b/Classes/PHPExcel/Reader/Excel2007.php
@@ -277,17 +277,48 @@ class PHPExcel_Reader_Excel2007 implements PHPExcel_Reader_IReader
 			$contents = $archive->getFromName(substr($fileName, 1));
 		}
 
-		/*
-		if (strpos($contents, '<?xml') !== false && strpos($contents, '<?xml') !== 0)
-		{
-			$contents = substr($contents, strpos($contents, '<?xml'));
-		}
-		var_dump($fileName);
-		var_dump($contents);
-		*/
 		return $contents;
 	}
 
+	/**
+	 * Reads names of the worksheets from a file, without parsing the whole file to a PHPExcel object
+	 *
+	 * @param 	string 		$pFilename
+	 * @throws 	Exception
+	 */
+	public function listWorksheetNames($pFilename)
+	{
+		// Check if file exists
+		if (!file_exists($pFilename)) {
+			throw new Exception("Could not open " . $pFilename . " for reading! File does not exist.");
+		}
+
+		$worksheetNames = array();
+
+		$zip = new ZipArchive;
+		$zip->open($pFilename);
+
+		$rels = simplexml_load_string($this->_getFromZipArchive($zip, "_rels/.rels")); //~ http://schemas.openxmlformats.org/package/2006/relationships");
+		foreach ($rels->Relationship as $rel) {
+			switch ($rel["Type"]) {
+				case "http://schemas.openxmlformats.org/officeDocument/2006/relationships/officeDocument":
+					$xmlWorkbook = simplexml_load_string($this->_getFromZipArchive($zip, "{$rel['Target']}"));  //~ http://schemas.openxmlformats.org/spreadsheetml/2006/main");
+
+					if ($xmlWorkbook->sheets) {
+						foreach ($xmlWorkbook->sheets->sheet as $eleSheet) {
+							// Check if sheet should be skipped
+							$worksheetNames[] = (string) $eleSheet["name"];
+						}
+					}
+			}
+		}
+
+		$zip->close();
+
+		return $worksheetNames;
+	}
+
+
 	/**
 	 * Loads PHPExcel from file
 	 *
@@ -1428,6 +1459,8 @@ class PHPExcel_Reader_Excel2007 implements PHPExcel_Reader_IReader
 
 		}
 
+		$zip->close();
+
 		return $excel;
 	}
 
diff --git a/Classes/PHPExcel/Reader/Excel5.php b/Classes/PHPExcel/Reader/Excel5.php
index 24b2098b..3aa030ef 100644
--- a/Classes/PHPExcel/Reader/Excel5.php
+++ b/Classes/PHPExcel/Reader/Excel5.php
@@ -493,6 +493,55 @@ class PHPExcel_Reader_Excel5 implements PHPExcel_Reader_IReader
 		}
 	}
 
+	/**
+	 * Reads names of the worksheets from a file, without parsing the whole file to a PHPExcel object
+	 *
+	 * @param 	string 		$pFilename
+	 * @throws 	Exception
+	 */
+	public function listWorksheetNames($pFilename)
+	{
+		// Check if file exists
+		if (!file_exists($pFilename)) {
+			throw new Exception("Could not open " . $pFilename . " for reading! File does not exist.");
+		}
+
+		$worksheetNames = array();
+
+		// Read the OLE file
+		$this->_loadOLE($pFilename);
+
+		// total byte size of Excel data (workbook global substream + sheet substreams)
+		$this->_dataSize = strlen($this->_data);
+
+		$this->_pos		= 0;
+		$this->_sheets	= array();
+
+		// Parse Workbook Global Substream
+		while ($this->_pos < $this->_dataSize) {
+			$code = self::_GetInt2d($this->_data, $this->_pos);
+
+			switch ($code) {
+				case self::XLS_Type_BOF:	$this->_readBof();		break;
+				case self::XLS_Type_SHEET:	$this->_readSheet();	break;
+				case self::XLS_Type_EOF:	$this->_readDefault();	break 2;
+				default:					$this->_readDefault();	break;
+			}
+		}
+
+		foreach ($this->_sheets as $sheet) {
+			if ($sheet['sheetType'] != 0x00) {
+				// 0x00: Worksheet, 0x02: Chart, 0x06: Visual Basic module
+				continue;
+			}
+
+			$worksheetNames[] = $sheet['name'];
+		}
+
+		return $worksheetNames;
+	}
+
+
 	/**
 	 * Loads PHPExcel from file
 	 *
diff --git a/changelog.txt b/changelog.txt
index 1593222c..3cb0f760 100644
--- a/changelog.txt
+++ b/changelog.txt
@@ -26,12 +26,14 @@
 Fixed in SVN:
 - Feature:  (MBaker) Provide option to use PCLZip as an alternative to ZipArchive.
 					 This allows the writing of Excel2007 files, even without ZipArchive enabled (it does require zlib), or when php_zip is one of the buggy PHP 5.2.6 or 5.2.8 versions
+- Feature:	(MBaker) Work item 14979 - Added listWorksheetNames() method to Excel2007 and Excel5 Readers, allowing a user to extract a list of worksheet names from a file without parsing/loading the whole file.
 - Bugfix:   (MBaker) Work item 14888 - Simple =IF() formula disappears
 - Bugfix:	(MBaker) Work item 14898 - PHP Warning: preg_match(): Compilation failed: PCRE does not support \\L, \\l, \\N, \\P, \\p, \\U, \\u, or \\X
 - Bugfix:	(MBaker) Work item 14901 - VLOOKUP choking on parameters in PHPExcel.1.7.5/PHPExcel_Writer_Excel2007
 - Bugfix:	(MBaker) Work item 14973 - PHPExcel_Cell::isInRange() incorrect results - offset by one column
 
 
+
 2010-12-10 (v1.7.5):
 - Feature:  (MBaker) Work item 8769 - Implement Gnumeric File Format
                                       Initial work on Gnumeric Reader (Worksheet Data, Document Properties and basic Formatting)