magento 1.9 - Error when creating order from admin panel (Invalid method Mage_Sales_Model_Order::queueNewOrderEmail) - Magento Stack Exchange
module - Creating a grid in admin panel on click of a dropdown option magento 1.7.0.2 - Stack Overflow
How to implement IN and NOTIN MySQL statements in Magento grids for filtering
GitHub - smartgravity/magento-admin-custom-sales-order-grid: A Magento extension that creates a new Sales Order admin grid view of customer orders. Tested through 1.9.0.1