2010s

Volume 49 through 58 of The Cascade Caver

Do you have a copy of 2010s Volume 49, Number 1 or Number 3? Does anyone know what happened here?

2019 Vol 58 No 1
2018 Vol 57 No 1
2017 Vol 56 No 1
2015 Vol 55 No 1
2012 Vol 51 No 3
2012 Vol 51 No 2
2012 Vol 51 No 1
2011 Vol 50 No 2
2011 Vol 50 No 1
2010 Vol 49 No 5
2010 Vol 49 No 4
2010 Vol 49 No 2