Many of the 'koryu jujutsu' were actually 'sogo bujutsu' that included lots of weapons, even improvised weapons from household and agricultural implements.
There are some koryu jujutsu styles that have legitimate instructors overseas, but they're few and far between. And almost every single one AFAIK teaches weapons, up through and including swords, spears, naginata, short swords, bo, jo, hanbo, and a ton of other nasty bits. I practice a couple myself, but even in Tokyo where I live among around 37 million people, some of the genuine koryu jujutsu styles are only practiced by a mere handful of people.
They include, but surely are not limited to:
Arakiryu (but formally known as a 'kempo' ryu)
Takeuchiryu (sometimes known as Takenouchiryu)
Tenjin Shinyo ryu (don't know specifically about weapons in this style)
Yagyu Shingan ryu
Daitoryu
There are also a couple of modern, 'gendai jujutsu' styles taught by advanced students overseas, I don't know of one near you. They also use small weapons, including techniques against staffs, etc.
Nihon Jujutsu
Daiwado ryu
maybe Yoseikan aikido ?(OK, sort of jujutsu, but uses a variety of kit AFAIK)
There are tons more where people have simply made up Japanese sounding names, stolen the name, or decided they were qualified to teach without permission after just a few years of practice, or all of the above.
Kano shihan himself famously described jujutsu as below:
http://www.fightingarts.com/reading/article.php?id=414 (full article at this link)
"The Old Samurai Art Of Fighting Without Weapons
Part 1 - Origins
By Jigaro Kano
Translated by Rev. T. Lindsay, April 18, 1888
Submitted by Stan Hart
Editor’s Note: This is the first part of an article originally written by Jigaro Kano, the founder of modern Judo (Jiudo). Part 1 investigates the origin of Jiujutsu (Jujutsu). There is also a glossary provided by Stan Hart, who translated the Japanese Kanji (characters) used in the original text. Part 2 discusses various schools and relates some stories about old Jiujtsu masters. The romanization of Japanese words that appear in this article are based upon the spellings used in England at the time the article was written.
In feudal times in Japan, there were various military arts and exercises by which the Samurai classes were trained and fitted for their special forms of warfare.
Among these was the art of Jiujutsu (1), from which the present Jiudo (2) has sprung up. The word Jiujutsu may be translated freely as the art of gaining victory by yielding or pliancy. Originally, the name seems to have been applied to what may best be described as the art of fighting without weapons,
although in some cases short weapons were used against opponents fighting with long weapons........."
www.e-budo.com has a lot of Japan-based practitioners of these styles if you're after the real thing, maybe someone can steer you in the right direction. This is, after all, a judo forum
Banzai,