From a specialty press. Here is an excerpt from their Facebook page:
"A message from Russell Prestidge as a reaction to our forthcoming book ‘Freddie Gough’s Specials at Arnhem’: The Allied Forces Living History Association, in the U.K. is doing a display on 28th/29th May for English Heritage at Wrest Park.
We will bring Recce jeeps and Polsten guns, also will be covering 42 artillery with Jeeps and 75mm pack howitzer.
Allied Forces Living History Association.
Regards
Russell
Note from the publisher:
For more information about the 75mm pack Howitzer and The 1st Airlanding Light Regiment RA see our book 'Arnhem Bridge Target MIKE ONE'."
You'll have to send them a message for more details.
https://www.facebook.com/SigmondPublishing/
Usual disclaimer,
Ed