before and after
I came across this great looking slide earlier this week on eBay.

eBay
....and here is the same view in 2014 (413 7th Street)

GSV
I found the Lyndon by using the Hotel Cecil as a guide post. (I thought the blade sign said London in the vintage slide, so that caused some confusion)
__
I actually posted about the Lyndon back on May of 2013.
http://forum.skyscraperpage.com/show...ostcount=14856
At one point the Lyndon was stripped down to it's shell. -see it here:
http://forum.skyscraperpage.com/show...ostcount=14857
__