[PRCo] Re: Pgh Railways vehicle

[Matt Barry]

Excuse my lack of maintenance vehicle knowledge, but what is a 
differential dump?   I am guessing it was a vehicle used to spread 
ballast on private right of way?
hwandrews at wowway.com wrote:

>Looks like one of the Differental Dumps, ie M550-M555
>
>Howard
>On Mon, 19 Jun 2006 12:23:23 -0400, Matt Barry wrote
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>>Content-Type: text/plain; charset=us-ascii; format=flowed
>>Content-Transfer-Encoding: 7bit
>>Anyone know what type of railways vehicle this was?     There are 
>>two pics here, both from the Historic Pittsburgh site. The first is 
>>a wide view, as described below, and the 2nd is a close-up view of 
>>the railways vehicle in question.
>>
>>Title: North Shore
>>Date: March 12, 1929
>>Creator: Pittsburgh City Photographer
>>Description: Looking South from Reedsdale Street. A Grocery is On 
>>the Left and a Tailor Shop is On the Right. Subjects: North Shore 
>>(Pittsburgh, Pa.) Scotland Street (Pittsburgh, Pa.) Show windows-
>>-Pennsylvania--Pittsburgh. Commercial strips--Pennsylvania--Pittsburgh.
>>Grocery trade--Pennsylvania--Pittsburgh.
>>Location: North Shore
>>Address: Scotland Street
>>
>>-- Attached file removed by Ecartis and put at URL below --
>>-- Type: image/jpeg
>>-- Size: 77k (78886 bytes)
>>-- URL : http://lists.dementia.org/files/pittsburgh-
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>railways/northshore1929.jpg
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>>-- Attached file removed by Ecartis and put at URL below --
>>-- Type: image/jpeg
>>-- Size: 78k (80651 bytes)
>>-- URL : http://lists.dementia.org/files/pittsburgh-
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>railways/northshore1929_closer.jpg
>
>
>Thanks,
>Howard Andrews
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