The icons in Rss Feed Button icons pack are 01, 02, 03, 04, 05, 06, 07, 08, 09, 10, 11, 12, 13, 14, 16, 17 Icons.
The icons in Travel Icons icons pack are TI 01, TI 02, TI 03, TI 04, TI 05, TI 06, TI 07, TI 08, TI 09, TI 10 Icons.