Where can I find the poems of Yongzheng Qianlong in Qing Dynasty?

Quan Qing Shi Hua and Quan Qing Ci published by Zhonghua Book Company

There is also The Collection of Poems and Proses of Qing Dynasty, which was jointly compiled by China Renmin University and Peking University, and exclusively photocopied and published by Shanghai Ancient Books Publishing House.

But these books are voluminous and can only be found in the library.

You can also find The Complete Poems of Gao Qing Zongyu, which is a collection of imperial poems.