1898 Revenues: G.H. Mumm Printed Cancels: Joyce Type 3, 1 Cent 1899s

Joyce lists 9 different 1899 cancels for the 1 cent proprietary with the type 3 printed cancelation, from February through December. Below are examples of six of those dates except for February 1, March 1, and August 1. Two other unlisted dates, April 1 and June 1, are included. I am interested in receiving scans of stamps with the dates not included below to add to this post. Can you help?