These are two fine streamers that were created by Dave Goulet from Massachusetts. Dave is an outstanding fly tyer and owner of the Classic and Custom Fly Shop, on the Farmington River in New Hartford,CT. He operated this shop until his retirement a year or so ago.
The first streamer is the "Mobey Dick". I have fished this fly for years and it's a streamer that gets attention. It's fished in the normal way of fishing streamers, and can also be fished as a wet fly too. In times of high water I have placed a split shot just above the eye of the hook and have had good results sort of bouncing it off the bottom.
The second streamer is the "Brown Olive Ghost". It's a featherwing streamer tied in the Rangeley Style. This streamer is featured in G. Hilyards book "Carris G. Stevens". Its's a beautiful fly, and a productive one I'm sure, although I have never fished it.
I tied both of these streamers, and they are not extremely difficult to tie. The "Mobey Dick" can be found in the fly shops of CT and MA I'm pretty sure. The "Brown Olive Ghost" is a streamer that might have to be tied for you by a fly tyer.