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    Re: Charts
    From: Gary LaPook
    Date: 2009 Jan 19, 18:37 -0800

    Frank, thanks for the link to the charts. I was just looking at:
    
    http://historicalcharts.noaa.gov/tiled_jpgs_done/zoomifyURLDrivenWebPage.htm?zoomifyImagePath=752-12-1947
    
    
    which is the old 752 chart for Chicago. I noticed when I used this
    chart when I lived in Chicago that the street grid does not run true
    north. If you go to this link and follow the 87� 39' longitude line
    you will see that the north-south streets in Chicago run about 359�
    true. I know  the city was surveyed with the township-range grid but I
    thought that this would cause the Chicago grid to run true north. I
    noticed that when driving north that at several main streets ( I think
    39th was one of them) and spaced eight miles apart you make a slight
    jog to the west and then continue north on the same street. I bellieve
    that this is a result to the township-range survey method. But I still
    don't understand why the streets are not true north and I am sure that
    the surveyors wouldn't have made such a large error.
    
    Do you have an explanation?
    
    gl
    
    On Jan 19, 2:43�pm,  wrote:
    > Yes. The Office of Coast Survey has compiled a wonderful collection of old 
    charts. Here's the search 
    page:http://historicalcharts.noaa.gov/historicals/historical_zoom.asp
    >
    > Enter "Long Island" under keywords, set the state to "New York", click 
    "Submit", and you will get a list of some 82 charts (in no particular order). 
    It's a lot of fun.
    >
    > -FER
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