The letter details how the Perth Zoo is responsible for the freight and that the Minister had approved the transaction. Many Clydesdales were to follow the first two bay mares with the consignment note description "for lions food, freight payable by consignee". This practice continued until well into the 1950s until tractors replaced the use of horses in farming. Since the opening of the museum in 1978 Avondale again utilised Clydesdales for demonstrations of the old equipment these horse are sold as pets once they are incapable of working.