1. How many radio receiving set owners paid the licence fee in 1929, 1930 and 1931, in each of the following cities, Ottawa, Toronto, Hamilton, London and Windsor, Ontario?
2. Are firms selling receiving sets required to report separate sales to the department when such sales are made?
3. If so, how many sales were reported in the above cities in each of the years 1929, 1930 and 1931?
Subtopic: RADIO LICENCE FEES