This Vintage Airplane drawing, featuring several models of rotary engine Waco biplanes (Cabin, UPF-7, etc.), was created by pencil artist Kelli Swan. The original black and white pencil drawing was hand-tinted with color details, yielding this final look. The artwork is titled "Wacos". Kelli Swan specializes in the beautiful and striking effect of black and white pencil drawing. Her detailed illustrations depicting a variety of themes have won many awards in prestigious juried art shows. She offers custom portraits and designs as well. Please message her with any questions.