Cover is franked with CL13e which has the "FED" initials in red on the CL13 stamp. Cover flown from Toronto Dec. 18, 1926, to Red Lake, via Sioux Lookout. Has Red lake received CDS on the back. Cover has a Patricia Airways & Exploration Ltd. corner card on the front & the back has a map showing the company's routes. FED is the initials of F.E.Davidson the company's financier. A scare cover in extremely fine condition. A key cover in any Patricia Airways exhibit.