(ET) need instructions fo unsubscribing...

Subject: (ET) need instructions fo unsubscribing...
From: Cabin Solar <cabinsolar yahoo com>
Date: Thu, 8 Jul 2010 05:27:53 -0700 (PDT)
Dkim-signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=yahoo.com; s=s1024; t=1278592073; bh=J0Z0CbcUMJepzuAAg1E3eDEExR01vj3fgb/8Hwt2H9w=; h=Message-ID:X-YMail-OSG:Received:X-Mailer:Date:From:Subject:To:MIME-Version:Content-Type; b=hWgTt44EdOHO7Ct5/dnUinxbPtlOM1f8wEp8lLAMwF9seypJg+4MX7IEyX96+MyGgqtZ1mEsjCSP6FA67fueI9QRmnjrVfscRVyJdKtOo8tlt3oJc5vBnzDBr48MCtJE19ZryTG7FQSVyTWxTpQzE521Bu1n9mcyXNXnb2/NwP8=
Domainkey-signature: a=rsa-sha1; q=dns; c=nofws; s=s1024; d=yahoo.com; h=Message-ID:X-YMail-OSG:Received:X-Mailer:Date:From:Subject:To:MIME-Version:Content-Type; b=fmq/hLrdySamTlU/DtzSt0/vWPfkqs8wDqup42F64itIb0PS0kUuQrLrEG3wp09BPpIvNwKPdSiL4xFrGkDyIFU/hrb69R03nK/o9Th5LfCsRTaFMi+6XaRropfmLfmsmdVKkFN51vyRx9sLfpIK1FxAYPC7geJcoDDc5cC48+M=;
List-archive: <http://cosmos.phy.tufts.edu/mhonarc/elec-trak>
List-help: <mailto:elec-trak-request@cosmos.phy.tufts.edu?subject=help>
List-id: Electric tractor discussion list <elec-trak.cosmos.phy.tufts.edu>
List-post: <mailto:elec-trak@cosmos.phy.tufts.edu>
List-subscribe: <https://cosmos.phy.tufts.edu/mailman/listinfo/elec-trak>, <mailto:elec-trak-request@cosmos.phy.tufts.edu?subject=subscribe>
List-unsubscribe: <https://cosmos.phy.tufts.edu/mailman/options/elec-trak>, <mailto:elec-trak-request@cosmos.phy.tufts.edu?subject=unsubscribe>

Thanks. Al