Info I have is.
The July 1959 issue…. was Not printed due to a printers strike
The February & March 1974 issues were combined due to the 3 day week. 
This was the Email.
Due to the unfolding situation with Coronavirus (COVID-19) and the closure of most WH Smith stores, newsagents and other stores, we're writing to let you know that we are going to pause production of the magazine from the current edition.
For many years, our mission has been to provide the best quality editorial to our valued readers – and rest assured, we are committed to try and get through this very difficult time for the country, and world at large.
You do not need do anything and we still be fulfilling entitlements in the future. We will continue to monitor the situation closely and communicate with you further as and when we’re able to restore business as usual.
For this period, we are extending to you free access for the foreseeable future to the digital archive containing back issues of your magazine. These issues are available to read whilst connected to the internet. We will continue this until we can be confident that our supply chain has returned to normal.
To activate your archive access (should you do not already have access) please visit https://www.modelboats.co.uk/archive and follow the steps.
Edited By The Long Build on 19/05/2020 22:56:59