I still have a copy of the first ever inter-service Aircraft Recognition journal, dated September 1942, which has survived despite being printed on low-quality wartime paper. It was saved from being consigned to a skip when the Brize Education section had a clear out.... The messages from VSOs on the inside front cover emphasise the importance of aircraft recognition unequivocally.
On pp6-7 there is an article on the Focke-Wulf Fw 190A3. Interestingly, it is factual and free of any propaganda.
The centre spread features the 'fastest and most formidable aeroplane of its type in the world' - the Avro Lancaster. Even though the journal was unclassified, it stated that the 'maximum bomb load of 15,800 lb can be carried for more than 1,000 miles'. Perhaps the spooks hoped that this would be passed into enemy hands, so that they knew what was about to come their way?
JARIC recce guides could be....variable in quality. The one they produced for the South Atlantic included the Catalina (Canso, actually). The last one had been retired 12 years before the South Atlantic war, but the JARIC guide showed one....in WW2 RAF markings!