There are a number of web sites featuring Linn Park and Cathcart.
Update: 29 November 2020. The ScotCities.com web site appears to be down. Fortunately it has been regularly acrhived by "the wayback machine" - and the latest archive was on 26th October 2020 - at http://web.archive.org/web/20201026044630/http://www.scotcities.com/.
The links below have have been updated [we hope temporarily].
Prominent amongst these is http://www.scotcities.com/ - which has a number of relevant pages, namely:
The associated web site of Gerald's Drawings was also archived - last one on 6th May 2020.
http://web.archive.org/web/20200506143452/http://www.archidrawings.org/