For as long as I remember, especially when I lived in Boston and Cambridge, I have sought refuge at the Arnold Arboretum of Harvard University in Jamaica Plain. I have been especially fascinated by the Larz Anderson Bonsai Collection, the oldest bonsai display in the United States. Inspired by this collection and by the bonsai displays at the New England Flower Show I began to dabble with bonsai 45 years ago. Having met and visited and tried to learn from many great bonsai masters, I feel that I have reached the level of Advanced Beginner. On Sunday, May 22, 2016, 1:00 - 3:00pm at the Arnold Arboretum there will be a program “Collections up Close, the Bonsai and Penjing Collection”. At this meeting Steven Schneider, Director of Operations, will introduce the new Martin Klein Collection, a comprehensive collection of Japanese, Chinese and North American species. I am honored and humbled to contribute to this oldest collection of bonsai in the United States. After the event I will be posting more information.

More information about this display:

More information about the Larz Anderson Bonsai Collection:


Congratulations to Alpena High School for winning the 2016 Martin Klein MATE Mariner Award Medal at the MATE ROV Competition at NASA in Houston, Texas!

Allen Jamie Klein 1977 - 2016

With trembling hands and a broken heart I must share the dreadful news that our son Jamie (Allen or Al to many of you) Klein died unexpectedly July 20, 2016, just two days before his 39th birthday. I appreciate all of the cards, emails, etc.

In honor of Jamie, please remember the words of folksinger Bob Franke, "Let's be kind to each other, not forever but for real."

Frederick J. Squires, Jr. 1927 - 2017

Very sad to have to announce the passing of US Navy Retired Chief Petty Officer Frederick J. Squires, Jr., my friend and right-hand man for most of my career. A true American hero he was a "tin can sailor" having served on a Navy destroyer in World War II. He had just turned 90 years old. Fred played a huge part assisting me in the development of side scan sonar.

Eternal Father, strong to save,

Whose arm hath bound the restless wave,

Who bidd'st the mighty ocean deep

Its own appointed limits keep;

Oh, hear us when we cry to Thee,

For those in peril on the sea!

Sailor Rest Your Oars

24 January 2018

Fifty years ago on a snowy day in a little rented cottage in Lexington, Massachusetts I started a small business, Klein Associates. I began by consulting for M.I.T., Benthos, Perry Submarine and others while planning the new venture. We moved to Salem, New Hampshire the following January and began design and manufacture of side scan sonar, sub-bottom profilers, magnetometers and towing accessories. I am proud that the company established a worldwide reputation for innovation, quality, fair dealings and customer service. Still going strong, the company is now

Congratulations to Peter Runciman and Giuseppe DiStefano on the issuance of U.S.Patent 11,585,911,Variable Geometry Sonar System and Method. This gap-filling sonar helps solve an issue that has long plagued side scan sonar operators.