Forsyth of Canada Classic Fit Non-Iron Long Sleeve Grid Check Sport Shirt (as1, Alpha, l, Regular, Regular, Crimson, Large) at Amazon Men's Clothing store
Roots Canada Men's Size M Plaid Button Front Shirt Red Blue | eBay
Men's Check & Plaid Shirts | Simons Canada
BUFFALO CHECK FLANNEL WORK SHIRT (RED/BLUE) | Nama Denim
Wool and Cotton Flannel Sport Shirt: Men's Viyella Shirt Classic Red Plaid Pattern 559431-4598 | The Lanam Shop