It did!

There were only a few countries that had Garretts - what is the prototype for this one? 

Garrett

Hope this is some assistance.

Here is an extract from Wikipedia :

"The AD60 class were Beyer-Garratt patent articulated four-cylinder, simple, non-condensing, coal-fired superheated,  4-8-4+4-8-4 heavy goods steam locomotives built by  Beyer, Peacock and Company for the  New South Wales Government Railways in Australia."

"The  4-8-4+4-8-4 Beyer-Garratt patent consists of a boiler carried on a separate frame in the centre of the locomotive and supported by the frames of the two engines, one at each end. The locomotive thus consists of three parts: a water tank, a fixed chassis supporting a boiler and a rear engine unit carrying a coal bunker and water tank. Coupled axle loading of 16 long tons (16.3 t; 17.9 short tons) and able to negotiate 6-chain (120 m)  curves.

The design incorporated the most modern technology to minimise maintenance and repairs, including:

• integral cast steel beds incorporating the engine frames
• large steel boiler with roundtop firebox and  flexible stays
• mechanical stoker
• roller bearings fitted to  bogie and  coupled wheels
• valve gear operated by Hadfield powered  reversing gear"   

Preserved NSWGR Garretts

At this point in time there is only one operation Garrett.

After restoration which took eight years and included the fitting of a replacement boiler sourced from a lumber mill in 1983, 6029 was first steamed at Canberra in February 2014. It has been named the City of Canberra and operated its inaugural trip from  Goulburn, New South Wales to  Thirlmere, New South Wales on 28 February 2015. At Thirlmere 6029 was staged alongside 6040 marking the first time in 40 years two of the same class could be seen and photographed together.

Actually...

...there were lots of countries that had garratts (note garrAtt is a locomotive garrEtt is a room) just not in North America. They were quite popular in less developed countries that had light trackwork due to the better spreading of the weight.

Most of the states in Australia had them along with quite a few African countries notably South Africa and Rhodesia. Also there were lots of South American and Asian ountries that ran them too, Even Russia Dabbled!

A list of countries that had garrats from wikipedia:-

Africa

• Algeria
• Angola
• Botswana
• Kenya, Tanzania and Uganda
• Mozambique
• Rhodesia / Zimbabwe and Zambia
• Sierra Leone
• South Africa
• Sudan

Asia

• Burma
• Ceylon (now Sri Lanka)
• India
• Iran
• Mauritius
• Nepal
• Turkey

Australasia

• New Zealand
• New South Wales
• Queensland
• T asmania
• Victoria

Europe

• Netherlands
• Spain
• United Kingdom
• USSR

S outh America

• Argentina
• Bolivia
• Brazil
• Colombia
• Peru

The NSWGR Garratts were the most powerful locomotives built for Australia and second only in tractive effort (60000lbs) to the South African Railways GMA/M 4-8-2+2-8-4 at 60700lbs. However 30 were rebuilt and this increased their tractive 63000lbs. These were refered to as Super Garratts by the crews.

ALCo owned the rights to the Garratt Patents in North America but never used them, however there was a proposal for a Big Boy Garratt, 4-8-8-4+4-8-8-4 for UP but it was never more than a sketch. an Italian modeller did build a model of one in HO scale.

Garratt

Those are one of my favorite engines. I have a Brass HO scale one. I love it.

no photo

I do not see the photo

No Photo

I couldn't see a photo either.

Pretty sure it was there before....

All his photos seem to be gone.

pics of a preserved unit

I don't see Dawson's photo either.

Here is NSW standard-gauge AD60 class #6040 at the Thirlmere (NSW) Railway Museum in 2009. They are certainly unique beasts with an interesting history. Not to be confused with the problematic "Australian Standard Garratt" built for narrow-gauge lines in other Australian states.

https://en.wikipedia.org/wiki/New_South_Wales_AD60_class_locomotive