I found this map of the Venice Miniature Rail Road in
the PDF file posted by Chuckaluck. It's similar to
the one posted by Flyingwedge a couple of days ago, but also shows some details of the Lake Avenue station, yards and shops (see
Godzilla's previous post for a couple of pictures).
www.lawesterners.org (PDF file)
This map also contains an area below the Grand Basin/Lagoon marked Midway Plaisance. The postcard below shows the entrance along with a helter skelter and the back of a VMRR train.
eBay
This Aerial view of Venice shows how the canals and Midway Plaisance looked in 1918.
USC Digital Library
The roller coaster in the lower right corner was called 'The Race Thru The Clouds', and promised to be "Exhilarating, Inspiring, Exciting".
An article on venicebeachbustours.com says
"it opened on July 4, 1911" and
"even with only half of its cars on line, over 25,000 people rode it in one day."
USC Digital Library
There are plenty of colorized postcards of 'The Race Thru The Clouds' entrance on eBay, but the venicebeachbustours article has one of the best side views of the roller coaster (the full version is over 2300 pixels wide). Apparently, it was 90 feet high and had two parallel tracks (hence the 'race' element), each 4000 feet long. The picture above has a big banner proclaiming "The New Race", "Its entirely different from the old one", "All new sensational dips", "Some Thriller", so I'm assuming that it was remodeled at some point.
venicebeachbustours.com